Answers
Phenylketonuria is an autosomal recessive genetic condition caused by a mutation in the PAH gene, which can be inherited from the parents, but it can also happen from a new mutation.
Mutation can happen during the production of new reproductive cells (sperms and eggs) because there is always a chance for mutation during the replication of genetic material, such as the one that occurs before meiosis.
However, given that this is an autosomal recessive condition, which means you need two copies of the mutated gene to express the condition, is more likely that Mateo's parents are both carriers of the condition, meaning they each have a defective copy of the gene but don't have the condition.
Each of us has two copies of each chromosome, with one of these copies coming from our mother and the other from our father. Reproductive cells have only half of the genetic information because they produce by meiosis, where the chromosomes undergo a crossing over, which mixes the original chromosomes and also results in a total of four cells with a copy of each chromosome.
This means that both the egg and the sperm that originated Mateo had a defective copy of the PAH gene, that was always present in his parents, and that is how he has PKU.
Related Questions
Select the correct answer.
How many pea plant traits did Mendel study to prove the Laws of Inheritance?
Answers
Answer:
7 pea plant traits that mendel had to study
Answer:
Seven different features
Explanation:
Mendel studied the inheritance of seven different features in peas, including height, flower color, seed color, and seed shape. To do so, he first established pea lines with two different forms of a feature, such as tall vs. short height.
Which of the following best describes scaffolding branches?
new growth branches carrying the majority of blossom and fruit
secondary branches pruned away in second year of shaping
central branches preserved in central leader pruning
structural branches preserved to carry new growth in later prunin
Answers
Scaffolding branches are the central branches that are preserved in central leader pruning. Option 3.
What are scaffolding branches?Scaffolding branches refer to central branches that are preserved in central leader pruning.
These branches serve as the main structural framework of a tree and are selected to support future growth and development. Scaffolding branches are strategically chosen and maintained to provide a strong and balanced framework for the tree.
They act as the primary branches from which new growth will emerge in subsequent pruning and play a crucial role in shaping the overall structure of the tree.
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The picture shows the elastic cartilage. Please find the correct label for the structures in the picture
1. All of the answers are correct
2.B is the neucleus of a chondrocyte
3.C is the elastic fiber
4. A is a lucuna
Answers
Answer:
postive its "C"
Explanation:
What does the moon not have on its own?
O rotational period
O gravity
O revolution period
Olight
Answers
The Moon can only be seen as a result of the Sun's light reflecting off it. It does not produce any light of its own.
The moon does not produce any light on its own, and can be seen of reflection from sun light
The Movement of a Chemical Does
The Movement of a Chemical Occurs from High to Low Concentration.
The Movement of a Chemical Occurs from Low to High Concentration.
The Movement of a Chemical Requires Chemical Energy.
The Movement of a Chemical Does Not Require Chemical Energy.
12. Select All Correct Statements Pertaining to Primary Active Transport.
The Movement of a Chemical Requires a Transporter Protein.
Chomical Does Not Require a Transporter Protein.
Answers
The Movement of the Chemical Does Low to the High Concentration.
Chemical Behavior We are developing techniques to measure the behavior of various types of chemicals in the environment using a passive sampler. Passive samplers measure chemicals in the environment. Chemicals are ingested by his sampler passively in a manner similar to that ingested by humans and animals. A chemical is a substance with a defined composition. That is, chemicals are always made up of the same "things". Some chemicals are found in nature, such as water. A chemical reaction associated with, used by, or produced in chemistry or chemical phenomena. :Acting on or manipulated or manufactured by chemicals. A chemical fire extinguisher. :Detectable by chemical means.02-Nov-2022
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If your right I’ll mark brainiest only answer if you really believe that your answer is right
Answers
Answer:ok so it might be b
Explanation:
A crime scene has the following blood splatter against a wall 2 feet from where the victim was standing what type of impact would have caused this pattern 
Answers
Answer:How It’s Done. Bloodstain Patterns that May be Found. Bloodstains range in both amount of blood and type of pattern—from pools of blood around a body to obvious spatter patterns on the walls to microscopic drops on a suspect’s clothing.
Explanation:
I need help on This question I’ll give you brainliest
Answers
The change to the investigation that would remove the source of the error noticed by the scientist is to test a fourth group, in which the participants do not receive the mineral supplement (option A).
What is a controlled experiment?A controlled experiment is an experiment designed to replicate the main experiment in every way, except in respect of the one variable that is being tested, so as isolate the effect of that variable.
In other words, a control is introduced in the experimentation process. A control is group of test subjects left untreated or unexposed to the independent variable.
According to this question, a company is testing the effect of a mineral supplement on common cold. The experimental procedure is okay except that they didn't include a fourth group, which will serve as the control.
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Provide a scientific term for ‘breaking down’ of nutrients.
Answers
Answer: DIGESTION
Explanation:the breaking down of nutrients is know as digestion.DIGESTION is the process of mechanically breaking down food into substances for absorption into the bloodstream. Hope this helps!
Where are the A, B and RH antigens located
Answers
Answer: The A, B, and Rh antigens are located on the surface of red blood cells.
Explanation:
A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes S^AS^A S^AS^B and S^BS^B respectively in a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4
Answers
Populations in Hardy-Weinberg equilibrium express the same allelic and genotypic frequencies through generations. Number of individuals expressing each phenotype: 63 sheep S^AS^A, 84 sheep S^AS^B, 28 sheep S^BS^B.
What is Hardy-Weinberg equilibrium?The Hardy-Weinberg equilibrium theory states that allelic and genotypic frequencies in populations that is in equilibrium remain the same through generations. No evolutive forces are acting on these populations, so no evolution occurs.
Assuming a diallelic gene,
Allelic frequencies
The frequency of the dominant allele f(X) is pThe frequency of the recessive allele f(x) is qGenotypic frequencies
p² (Homozygous dominant genotypic frequency), 2pq (Heterozygous genotypic frequency), q² (Homozygous recessive genotypic frequency).The addition of the allelic frequencies equals 1
p + q = 1.
The sum of genotypic frequencies equals 1
p² + 2pq + q² = 1
In the exposed example,
Alleles Frequencies
S^A f(S^A) = p = 0.6S^B f(S^B) = p = 0.4Genotypes
S^AS^A ⇒ homozygousS^AS^B ⇒ heterozygousS^BS^B ⇒ homozygousWe need to get the number of animals expressing each genotype and phenotype. To do it, we just need to use allelic frequencies and calculate genotypic frequencies (p², 2pq, and q²), and then multiply these values by the total number of animals (N = 175).
Genotypic and Phenotypic frequencies
F(S^AS^A) = p² = 0.6² = 0.36
F(S^AS^B) = 2pq = 2 x 0.6 x 0.4 = 0.48
F(S^BS^B) = q² = 0.4² = 0.16
Number of individuals expressing each phenotype
S^AS^A ⇒ 0.36 x 175 = 63 individualsS^AS^B ⇒ 0.48 x 175 = 84 individualsS^BS^B ⇒ 0.16 x 175 = 28 individualsYou can learn more about the Hardy-Weinberg equilibrium at
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Complete question
A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes
S^AS^A S^AS^B and S^BS^BIn a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4.
Using the hardy weinberg equation calculate the number of sheep with each phenotypes in the flock show your working
The Law of Independent Assortment states that:
A. two alleles for each characteristic separate during gamete formation.
B. when gametes are formed, genes for different traits are randomly sorted into the gametes.
C. during fertilization alleles are randomly paired together when gametes fuse.
D. alternate versions of genes cause variation in inherited characteristics.
e
Answers
The Law of Independent Assortment states that alternate versions of genes cause variation in inherited characteristics. The correct option is D.
What is the Law of Independent Assortment?The law of Independent Assortment is given by Gregor Mendel. He was a scientist and botanist who gave very useful discoveries in the field of hereditary.
The law of Independent Assortment states that the gene from both parents for the same traits does not overlap, They were present independently, and they are the reason for the variation.
Variation is the different characters present in an organism. The recessive gene and the dominant gene are the two types of alleles. The dominant allele is shown in the organism.
Thus, the correct option is D. alternate versions of genes cause variation in inherited characteristics.
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similar between skin cell and fat cell
Answers
Answer:
Initial Vision Step Location
Dipin Ghimire
1. Where does the initial step in vision occur? Optic nerve Ganglion cell Retina OVisual cortex
The initial step in vision occurs in the retina, which is a layer of tissue at the back of the eye that contains light-sensitive cells called photoreceptors. When light enters the eye, it is absorbed by the photoreceptors, which convert it into electrical signals. These signals are then transmitted to other cells in the retina, such as ganglion cells, which transmit the signals to the brain via the optic nerve. The visual cortex, which is located in the brain, processes these signals to create the visual images that we see.
Dipin Ghimire
similar between skin cell and fat cell
Both skin cells and fat cells are types of cells that are found in the human body. Some of the similarities between these two types of cells include:
Both skin cells and fat cells are made up of cell membranes, cytoplasm, and nuclei.
Both types of cells contain organelles such as mitochondria, ribosomes, and endoplasmic reticulum.
Both skin cells and fat cells are capable of dividing and reproducing to maintain the integrity and function of the tissues in which they are found.
Both skin cells and fat cells are essential for the proper functioning of the body and play important roles in maintaining health and well-being.
a) Look back at your hypothesis from question 2. Could this hypothesis become a theory if
you repeated your experiment 100 different times and got the same results? Can a theory be
I
created by just one person? (2 points)
Answers
A theory can be created by just one person, but it requires extensive research, experimentation, and peer review to become widely accepted. A theory is a well-established explanation that has been repeatedly confirmed through observation and experimentation, and it must be supported by a large body of evidence. Therefore, a theory cannot be created by just one person without extensive research and experimentation, and without undergoing peer review to ensure its validity.
Explain the reason the Type AB and Type O blood phenotypes always have the same
genotype, whereas the Type A and Type B blood phenotypes have two possible allelic
combinations.
Answers
Answer:
Because A is co-dominant to B and O is recessive, so the genotype is the same as the phenotype. But A can have 2 genotypes because A can mask a recessive allele, which makes the phenotype A. B can also mask a recessive allele, which makes the phenotype B.
Examples
AO (genotype) = A (phenotype)
BO (genotype) = B (phenotype)
Which of the following is not an example of a mutagen?
1. X-ray
2. Cosmic rays
3. Shadow blow with a fist
4. Pesticides
Answers
Answer: 3
Explanation:
How does mitosis help organisms?
a) Mitosis is the process where new identical cells are created.
b) Mitosis provides energy that organisms need to grow and live
c) Mitosis is used in the reproduction of new multicellular organisms.
d) Mitosis allows organisms to absorb water and oxygen needed to make chemical energy
Answers
blank. readers are more likely than others to have successful reading experiences.
Answers
Answer:
Active
Explanation:
Because if you are active a lot with reading you can have more experience and you would know more skills to reading.
Answer:
Active
Explanation:
How does a day that is not windy affect the production of electricity?
A. It doesn't have an effect. The wind is endless.
B. Houses or businesses would not be able to use as much electricity on that day.
C. The windmill would produce electricity anyway because it doesn't need the wind to make it turn.
D. Wind cannot be stored. Alternative power sources would have to be used.
Answers
Answer:
a i think
Explanation:
1. In DNA, the complementary bases are A-T and C-G, what is different about the complementary base pairing rules for RNA?
2. What amino acid is made from the mRNA codon GUA?
3. If the original DNA sequence is TAC-CCC-GAT-CGT, what would the complementary mRNA sequence be?
4. Using the mRNA sequence from number 3, what amino acids will be made from that sequence?
5. What are all the possible codons that would create the amino acid histidine (his)?
6. How many different codons are there that will create arginine (arg)?
7. If the amino acids joined together to make a protein are valine-proline-stop, what is one of the possible sequences of mRNA that could have created it?
Answers
2. Val
3. AUG GGG CUA
4. Met gly leu
5. CAU CAC
6. CGU CGC CGA CGG
7. GUC CCC UAA
These are my guesses but I’m 90% sure these are correct!!
Two different species of rock pocket mice live in the same desert Both eat plant seeds. What phrase best describes their relationship to each other?
predator-prey
interspecific competition
competition
intraspecific competition
Answers
Answer:
a
Explanation:
Brown eyes are dominant over blue eyes for a particular litter of puppies. What could account for a litter of puppies that had more blue eyes than brown eyes? Brown eyes are dominant over blue eyes for a particular litter of puppies. What could account for a litter of puppies that had more blue eyes than brown eyes?
Each parent provided both dominant and recessive genes in equal numbers.
⊝
Genes from both parents were dominant.
⊝
Genes from both parents were recessive.
⊝
One parent provided dominant genes and one parent provided recessive genes.
Answers
Answer:
Genes from both parents were recessive
Explanation:
True or False: Purine is connected to pyrimidine using oxygen bonds.
Answers
Answer:
False
Explanation:
In DNA double helix molecule, there are four types of nitrogenous bases: adenine, guanine, cytosine and thymine. Purines (i.e., adenine, guanine) and pyrimidines (i.e., cytosine and thymine) hold DNA strands together via hydrogen bonds. In base pairing, guanine always pairs with cytosine through 3 hydrogen bonds, while adenine always pairs with thymine by 2 hydrogen bonds. Hydrogen bonds are a type of dipole–dipole interaction where a hydrogen atom is covalently bonded to a very electronegative atom (e.g., Nitrogen or Oxygen).
Eukaryotic cells undergo mitosis, which produces two identical daughter cells. These cells are identical to each other and to the original parent cell. From the options below, select ALL of the reasons why a eukaryotic cell undergoes mitosis and the cell cycle.
Answers
Answer: The formation of a new cell from the old cell is called cell division.
Explanation:
There are two types of cell division.
A cell division that has the same number of chromosomes as the parent cell is called mitotic cell division. The purpose of mitosis is to increase the number of cells to form a tissue.
The increase in the number of cells helps to make the tissue and repair the damaged cell.
Hence, the correct answer is the repair of damaged cells.
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what is a domestic animal
Answers
Answer:
Your answer:.
A domestic animal is the animal that was trained or bread to be tame around humans .
Most of these animals are vertebrates such as mammals ..
Explanation:
Hope it helps you....Thanks...
The heart is an organ in the circulatory system. Muscle tissue in the heart contracts to pump blood to the body. Connective and epithelial tissues in the heart hold the muscle cells together and in place in the chest. Nervous tissue in the heart coordinates how fast and hard the muscle cells contract.
Based on the information about the heart, which of these best describes the relationship between tissues and organs?
A.
None of the tissues in an organ help the other types of tissue to function.
B.
Organs function best when they are made up of only one type of tissue.
C.
Organs can function because they are made of different types of interacting tissues.
D.
Each type of tissue in an organ can carry out the function of the entire organ.
Answers
Which type of energy is found in food?
OA. Chemical
OB. Thermal
OC. Mechanical
OD. Kinetic
Answers
Answer:
Chemical energy
Explanation:
We get chemical energy from foods, which we use to run about, and move and talk (kinetic and sound energy). Chemical energies are stored in fuels which we burn to release thermal energy - this is one way of making electricity, see Electricity for more information.
state three of the body's physiological responses to exercise and explain how each helps maintain homeostasis
Answers
Answer:
It regulates temperature, glucose, toxins, blood pressure and ph
Which of the following groups of
animals could be found in the tundra?
A. bison, longhorns, burrowing animals, birds that nest
on the ground, and foxes
B. lions, rhinoceros, giraffes, and elephants
C. deer, fruit-eating birds, lizards, and snakes
D. migratory animals, oxen, caribou, and artic foxes
Answers
Answer: D (migratory animals, oxen, caribou, and arctic foxes)
Explanation: Migratory animals stay in the tundra during the "summer" months but leave during the colder and harsher months. The oxen and caribou have lower surface area to volume ratio which makes less heat able to dissipate into the surrounding area. They also have thick coats. In the summer fox are able to raise their young and prey on the birds and such that may migrate there.
The animals which live in the normal conditions live in this area. The correct statement is option D.
What is the most common animal in Tundra ?The most common animal in Tundra is the Arctic Fox.
Tundra wildlife usually contains the animals such as the The arctic foxes, migratory animals, oxen and caribou. There are harsh conditions in the winter thus the animals tend to elope from such areas in this case they are saved from the adverse effects of the weather and the climatic conditions.
The arctic fox is one of the most common animals that are found in the Tundra as the fox has thick skin with the property that it turns from brown to white in winter and the large body of them helps to preserve the heat that helps them to get saved from the adverse effects of temperature.
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The simplest type of a substance is a compound true or false
Answers
Answer:
True
Explanation:
Elements and compounds are examples of pure substances. The simplest units of elements and compounds are atoms and molecules. We find that these pure substances only contain one type of particle.