Answers
Answer:
anther.
Explanation:
the the microsporangia, which are usually bi- lobed, are pollen sacs in which the microspores develop into pollen grains. these are found in the anther, which is at the end of the stamen- the long filament that supports the anther.
Related Questions
if the parents genotype are as given below:
mother:AA.Bb,CC,Dd,EE,Ff,Gg,HH Father:Aa,BB,CC,Dd,Ee,Ff,Gg,Hh
a) then what is the probability of having a child with the following genotype: AA,BB,CC,DD,Ee,ff,gg,Hh
Answers
Answer: a
Explanation:
In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. Allele D produces tall plants and is dominant to d for short plants, and allele R produces round fruit and is dominant to r for oval fruit. The expected percentages of progeny phenotypes are listed below:
tall oval = 41%
short round = 41%
tall round = 9%
short oval = 9%
(a) What proportion are expected to be tall and produce round fruit?
Answers
In a diploid plant species, the proportion of progeny expected to be tall and produce round fruit is 32%.
In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. The expected percentages of progeny phenotypes are tall oval = 41%, short round = 41%, tall round = 9%, and short oval = 9%.To determine the proportion of progeny expected to be tall and produce round fruit, we need to consider the alleles for each trait. Allele D produces tall plants (dominant) and allele d produces short plants (recessive). Allele R produces round fruit (dominant) and allele r produces oval fruit (recessive).From the given percentages, we can deduce that tall ovals and short ovals combined make up 9%. Since tall oval is 41% and short oval is 9%, the proportion of progeny expected to be tall and produce round fruit is 41% - 9% = 32%.Therefore, the proportion of progeny expected to be tall and produce round fruit is 32%.For more questions on diploid plant
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Which type of mining is likely the least harmful to the environment?
a. surface mining
b. placer mining
c. subsurface mining
d. none of the above
Answers
Answer:
Placer mining
Explanation:
Placer mining can be less damaging to the environment than surface mines, as the sediment is returned to the water after the minerals have been extracted.
The mining that is likely the least harmful to the environment is the placer mining that is present in Option B, water is used in placer mining to separate mineral particles from soil.
What is placer mining?Placer mining involves the extraction of minerals from riverbeds, streambeds, and other bodies of water, and this method involves the use of water to separate mineral particles from soil, while placer mining is generally considered to be less harmful to the environment compared to surface and subsurface mining, but it can still have negative impacts if not properly managed. For example, the use of mercury in the gold extraction process can lead to water pollution and harm to aquatic life.
Hence, the mining that is likely the least harmful to the environment is the placer mining that is present in Option B.
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Which phrase justifies why the theory of evolution is a theory and not a law? a Describes the relationship between an organism and its environment b Makes accurate predictions based on only a small amount of empirical evidence c Explains diversity based on the principle of natural selection d Cannot be modified with the discovery of new evidence
Answers
Describes the relationship between an organism and its environment
Who might benefit from this claim?
A. people who have a fast metabolism
B. stores that sell exercise equipment
C. people who take vitamin supplements
D. grocery stores that sell legumes
Answers
The people that might benefit from the claim is grocery stores that sell legumes.
What is claim?A claim can be defined as a cause of action or right of action, usually a set of facts sufficient to justify a cause of action or event.
From the given passage, incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours.
What is metabolism?Metabolism is chemical reactions in an organism that occur to sustain the life of the organism.
Thus, the people that might benefit from the claim is grocery stores that sell legumes.
The complete question is below:
Read the claim. Breakfast is an important meal. It jump starts the body's process of using calories to break down food. Appetite can decrease with age, but going too long without eating causes metabolism to slow down. Current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. Who might benefit from this claim?
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Answer:d
Explanation:
Which statement describes where decomposers get the chemical elements
they need for growth?
A. They obtain the carbon and nutrients they need by catching and
eating autotrophs and heterotrophs.
B. They obtain carbon from the air, and they take up other elements
and water from the soil.
C. They use energy from the Sun to make oxygen that they change
into sugars.
>
D. They obtain carbon and other elements by consuming
decomposing organisms and their wastes.
Answers
Answer:
difference between heterosexuality and homosexuality
Which is not true according to Mendel's law and meiosis?
Answers
One example that is not true according to Mendel's law and meiosis is the inheritance of multiple genes that are located very close to each other on the same chromosome.
Mendel's law of independent assortment states that different genes are inherited independently of each other during meiosis, which means that the distribution of alleles for one gene should not influence the distribution of alleles for another gene. This is true as long as the genes are located on different chromosomes or are located far apart from each other on the same chromosome.
However, if two genes are located very close to each other on the same chromosome, they are said to be in strong linkage disequilibrium. During meiosis, the two genes may be inherited together as a unit, and the frequency of certain allele combinations may deviate from the expected frequencies based on independent assortment. This violates Mendel's law of independent assortment.
Therefore, the inheritance of multiple genes that are located very close to each other on the same chromosome is not true according to Mendel's law and meiosis.
can chemical energy from food
be converted to electrical energy
Answers
The body converts the chemical energy in food into mechanical energy and heat. The chemical energy in coal is transformed into electrical energy at a power plant.
so the answer to your question is yes.
Which best describes what is happening in the area marked y
Answers
answer is 1 oxygen is released in to the atmosphere through stomata
Why is it said that natural selection acts on phenotypes rather than on the genetic material of organisms?
Answers
Answer:
It's because an organism's phenotype, or physical traits, are what truly decide whether it can reproduce and pass on its genotype to the following generation.
Because the phenotype of an organism represents the alleles that are actually expressed in that organism, natural selection affects that phenotype.
Explanation:
For traits controlled by a single genetic locus, dominant phenotypes are expected to occur at a frequency of approximately 75%, in a randomly mating population.
true or false and why
Answers
Answer:
True.
Explanation:
The dominant phenotypes are expected to occur at a frequency of approximately 75%, in a population because of its dominant nature which allows them to appear in the physical structure of the organisms. In most of the offspring, the dominant allele shows their characteristics in the population whereas the recessive allele are hidden in that organisms and we can't see them in the physical appearance of the organisms.
How can we stop worldwide CO2 emissions from rising?
Answers
Answer:
carbon capture
Explanation:
There is a piece of machinery which takes in the air and filters out the carbon dioxide. carbon dioxide is then pumped into the ground and reacts with rock to form a solid compound
Rocks have been found in South America that are very similar in make-up and age to rocks in South
Africa. What might this evidence tell us about the plates under South America and South Africa?
OA. All rocks are the same; they can't be used be evidence for tectonic movement.
B. The rocks were probably formed when South America and Africa were
connected.
a
Oc. The rocks were probably deposited in both places when a tectonic plate broke
up.
D. Rocks are only produced when tectonic plates move against each other and
small pieces break off.
Answers
Answer:
B.
Explanation:
Once we were one big continent, so similarities on coasts of two different continents is evidence of them being once together
Base your answer(s) to the following question on the diagrams below and your knowledge of biology. The diagrams represent two different cells and some of their parts. The diagrams are not drawn to scale. Which statement best describes these cells?
Answers
Answer:
The diagrams represent two different cells and some of their parts. The diagrams are not drawn to scale.
Explanation:
You are designing a cell that will have the ability to increase gene expression through signal transduction in response to
oxytocin. What factor will be most important to the success of your project?
Answers
Answer:
the number of oxytocin receptors on the cell surface
Explanation:
The increase of the number of hormone receptors present on the surface of target cells increases the sensitivity of such cells to the hormone. Oxytocin is a neuropeptide hormone produced by the hypothalamus and released by the posterior pituitary gland. This hormone acts as a neurotransmitter that binds to oxytocin receptors in order to trigger a molecular cascade that finalizes with the activation of the enzyme Phospholipase-C. Oxytocin receptors are found in different types of brain cells including, for example, the amygdala and hippocampus (where oxytocin binds). This hormone acts as a chemical messenger that modulates brain functions associated with the reproductive system (i.e., childbirth and lactation) and human behavior.
Hi can someone whos good with biology please help me with this im struggling with these ratios for each of the blank lines.
Answers
Answer:
Phenotype ratio:
Black, rough: 9/16
Black, smooth: 3/16
White, rough: 3/16
White,smooth: 1/16
9:3:3:1
Genotype ratio:
BBRR: 1/16
BBRr: 2/16
BBrr: 1/16
BbRR: 2/16
BbRr: 4/16
Bbrr: 2/16
bbRR: 1/16
bbRr: 2/16
bbrr: 1/16
Please mark brainliest IF right.
Which part of the body contains bile an enzyme that helps down lipids
Answers
Answer:
liver
Explanation:
The liver produces bile, a solution that helps you digest fats. The gallbladder stores bile. As fatty food enters the upper portion of your small intestine (the duodenum), the gallbladder squeezes bile into the small intestine through the bile ducts.
During a population study, it was found that the frequency of albinism is 1:40,000. Determine the genetic structure of the population.
Answers
The genetic structure of the population is: 99.0025% of individuals have the dominant allele, 0.995% of individuals are heterozygous carriers of the recessive allele, 0.0025% of individuals have the recessive allele and exhibit albinism.
The frequency of albinism in a population can give us information about the genetic structure of the population. The frequency of albinism is 1:40,000, which means that for every 40,000 individuals in the population, one individual is expected to have albinism. Assuming that albinism is a recessive trait and that the population is in Hardy-Weinberg equilibrium, we can use the Hardy-Weinberg equation to determine the frequency of the two alleles in the population:
p² + 2pq + q² = 1
where:
p = frequency of the dominant allele
q = frequency of the recessive allele
p² = frequency of homozygous dominant individuals
2pq = frequency of heterozygous individuals
q² = frequency of homozygous recessive individuals
In this case, q² represents the frequency of individuals with albinism, which we know is 1:40,000 or 0.000025. Therefore, we can set up the equation as follows:
0.000025 = q²
q = sqrt(0.000025) = 0.005
Since q represents the frequency of the recessive allele, we can now calculate the frequency of the dominant allele as: p = 1 - q = 1 - 0.005 = 0.995
Finally, we can calculate the frequencies of the different genotypes in the population:
p²= (0.995)² = 0.990025 (frequency of homozygous dominant individuals)
2pq = 2(0.995)(0.005) = 0.00995 (frequency of heterozygous individuals)
q² = (0.005)² = 0.000025 (frequency of homozygous recessive individuals)
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A student collects some of the solution from the phloem in the stem of a plant. Which of the following would be present in the liquid?
a) Glucose
b) Starch
c) Amino acids
d) Cellulose
Answers
Answer:
D, cellulose.
Explanation:
Now choose one of the resources used for energy production that you have studied in this lesson. Describe how the way humans use or obtain this resource might impact the natural resource you described in part A. If you don’t think the natural resource in part A is affected, explain why.
Answers
Answer:
HERE
Explanation:
One resource used for energy production that can impact the natural resource of ozone layer depletion is coal. Burning coal releases pollutants like sulfur dioxide, nitrogen oxides, and mercury into the atmosphere, which can contribute to the formation of smog and acid rain. These pollutants can also react with other chemicals in the atmosphere to break down ozone molecules, contributing to the depletion of the ozone layer. So, the way humans use coal as an energy resource can have a negative impact on the ozone layer and the environment.
~~20. A base deletion of base eight (frameshift mutation) occurs in the following
nucleotide sequence: CTCACGATTGAGTAG. (4 points)
1. Write the codons (base triplets) for the original nucleotide
sequence. I
2. Write the codons (base triplets) for the nucleotide sequence
following the base deletion.
Answers
A base triplet is formed by the combination of 3 consecutive base
1. The codons (base triplets) for the original nucleotide sequence are-
CTC ACG ATT GAG TAG
2. A base deletion of base eight will result in frameshift mutation. The next nucleotide (base nine) will take the position of eight base and similarly other base will take the position of previous base resulting in formation of new nucleotide sequence.
CTC ACG ATG AGT AG
The last two base will not form a triplet and so will not code for any amino acid.
What is frameshift mutation?
A frameshift mutation in a gene is the addition or deletion of nucleotide bases in quantities that are not multiples of three. This is significant because proteins are encoded in groups of three nucleotides, which are read by cells. Each of these so-called "triplet codons" corresponds to a different one of the 20 amino acids needed to make a protein.
If the normal reading frame is changed by a mutation, the entire gene sequence will be misread following the mutation. This could result in the protein receiving the wrong amino acids or developing a codon that inhibits the protein from getting longer.
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What can be inferred from this cladogram? Image showing a cladogram. Traits are listed on the main branch of the cladogram. Vertebral column is the first trait listed at the bottom of the main branch. Lancelet is the first branch coming off the main branch. It appears before the vertebral column trait. Jaws is the second trait listed on the main branch, after the vertebral column. Lamprey is the second branch coming off the main branch. It appears after the vertebral column and before jaws. Walking on four legs is the third trait listed on the main branch. Tuna is the third branch coming off the main branch. It appears after jaws and before walking on four legs. Amniotic egg is the fourth trait listed on the main branch. The salamander is the fourth branch coming off the main branch. The salamander branch appears after walking on four legs and before the amniotic egg. Hair is the sixth and last trait on the main branch. The turtle is the fifth branch that comes off the main branch after the amniotic egg and before hair. The leopard is the final branch coming off the main branch. The leopard branch appears after hair. The amniotic egg evolved before animals could walk on four legs. The organism most related to the turtle is the tuna. The salamander’s DNA differs the most from the leopard. The trait that separates the lancelet from the lamprey is the vertebral column.
Answers
From this cladogram, it can be inferred that:
The amniotic egg evolved before animals could walk on four legs.The organism most closely related to the turtle is the tuna.The salamander's DNA differs the most from the leopard.The trait that distinguishes the lancelet from the lamprey is the vertebral column.What is a cladogram?The cladogram is a phylogenetic tree that represents evolutionary relationships among species based on the presence or absence of particular traits.
Overall, the cladogram provides a visual representation of how species are related to one another based on the presence or absence of specific traits, and how those traits have evolved over time.
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Answer:
The trait that separates the lancelet from the lamprey is the vertebral column.
Explanation:
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Curate a collection of diagrams and photographs that illustrate the structure and makeup of DNA, as well as its location in the cell. Then, research a method of using isopropyl alcohol and a liquid detergent in order to extract and observe your own DNA. Photograph your results and add the labeled photographs to your digital DNA gallery.
Answers
The isopropyl method of DNA extraction is a lab based technique hence the pictures and results cannot be provided here. The DNA structure consists of a sugar phosphate backbone and a nucleotide base.
The double helix shape of DNA, a two-stranded molecule that seems to be twisted, is what differentiates it from other molecules. Each of the two strands is made up of a phosphate molecule and a lengthy series of nucleotides. a five-carbon sugar molecule known as deoxyribose. a region rich in nitrogen.The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA in the mitochondria (where it is called mitochondrial DNA or mtDNA).Cellular organelles called mitochondria transform the energy from food into a form that cells can utilize.
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Write me a 10 minute speech about varicella zoster
Need it asap
Answers
Varicella Zoster is an infectious viral disease causing chickenpox in children and shingles in grown-ups. Inoculation plays a crucial part in avoidance and lessening complications.
Aspeech on Varicella-ZosterWomen and noblemen,
Nowadays, I would like to examine a vital and predominant viral disease known as Varicella Zoster. Varicella Zoster, commonly alluded to as chickenpox, is caused by a varicella-zoster infection. It fundamentally influences children, but can too affect grown-ups who have not been already contaminated.
Varicella Zoster presents as a profoundly infectious sickness characterized by a particular hasty, fever, and common disquietude. The infection spreads through coordinated contact or respiratory beads, making it effortlessly transmissible inside families and communities.
Whereas chickenpox is for the most part a gentle ailment in children, it can lead to more serious complications in grown-ups, pregnant ladies, and people with debilitated resistant frameworks. These complications incorporate pneumonia, bacterial contaminations, and in uncommon cases, neurological complications such as encephalitis.
Luckily, the improvement of a profoundly successful antibody has essentially diminished the frequency of Varicella Zoster around the world. Immunization not as it were secures people from the distress and potential complications of chickenpox, but too makes a difference anticipate the infection from spreading inside the community.
In any case, Varicella Zoster doesn't halt at chickenpox. Once the introductory contamination settles, the infection remains torpid inside the body and can reactivate a long time afterward, causing a condition known as herpes zoster, or more commonly, shingles.
Shingles are characterized by a difficult hasty that ordinarily happens in a single dermatome, regularly along the middle or confront. The reactivated infection can cause critical pain and inconvenience, enduring for weeks or indeed months. Moreover, complications such as postherpetic neuralgia, a persistent torment disorder, can happen, especially in more seasoned people.
To combat the chance of shingles, an isolated antibody called the shingles antibody or herpes zoster immunization has been created. This antibody not as it were makes a difference anticipate shingles but moreover diminishes the chance of postherpetic neuralgia.
In conclusion, Varicella Zoster, enveloping both chickenpox and shingles, could be a viral contamination that has critical suggestions for open well-being. We have made significant progress in reducing the burden of this disease through extensive vaccination efforts.
In any case, ongoing efforts to prevent Varicella zoster from returning to our communities and to protect powerless populations require prompt attention and vaccination.
Much obliged to you for your thought. Let's collaborate to ensure a better future for everyone.
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How can color be use in balance?
Answers
Answer:
Color balance changes the overall mixture of colors in an image and is used for color correction. Generalized versions of color balance are used to correct colors other than neutrals or to deliberately change them for effect.
Explanation:
name three factors that affect the rate at which an enzyme can catalize a reaction
Answers
Answer:
enzyme concentration, substrate concentration, temperature and pH.
Explanation:
All of the following are used for movement in unicellular organisms except ….
Answers
Answer:
its (c) pseudopodia
Explanation:
What happens to the pH if you add 0.4L of water to the blood? What is the new pH value?
Answers
Answer:
It decreases pH= 7.15
Explanation:
Which of the following nitrogenousbases is not found in DNA?
a. Adenine
b. Thymine
c. Uracil
d. Cytosine
Answers
Answer:
C) Uracil
Explanation:
All of these are found in DNA except for Uracil. Thymine is found in DNA, but gets replaced with Uracil, which is only found in RNA. Hope this helps!
Can you help me figure out the answer for emma.
Answers
First, to understand our results we must remember a little about how the tests and blood type works. We have two types of antibodies A and B, the absent phenotype is O, and the Rh that is another antibody. When we do a test, we use antiserums that will react to the presence of one of these two antibodies A and B, and it is characterized by agglutination of the drop of blood in the sample.
In the present case (Emma) seems in the photo, like there is no agglutination reaction which would be an O type, that is to say, it doesn't have A nor B antibodies, and accordingly to the exercise mother (Emily) and father ( Ernest) one is B and the other is A, so Emma wouldn't be their biological daughter, the likelihood is very low. The only possible genotype for someone O, is (OO) because is a recessive character.
A few notes: As far as it is visible on the photographs the blood doesn't look like there is an agglutination reaction, but it could be due to resolution, so it must be looked at carefully, nonetheless, when we see the next sample the one of Ernest it is possible to see agglutination if you look carefully at the A pit, it looks like there is a little of sand or some kind of residue, which is none other than the agglutination reaction, making Ernes positive for A antibody.