Homework Answers
Albinism is the lack of skin pigment. And it is autosomal recessive trait .
Let assume A gene is normal and mutated a gene is responsible for albinism. As albinism is a recessive trait, hence both the gene would be mutated i.e only homozygous aa genotype can express the trait .
Here, man and woman ( parents) both have phenotypically normal skin . But their child is albino .
Therefore the child's genotype is homozygous recessive ( aa ) ( 2nd option is right)
[ because only homozygous aa genotype can express the trait. And for this both the parent must pass one mutated a gene. So both the parent's genotype is heterozygous Aa . ( A is dominant over a so person with heterozygous Aa genotype can not express albinism. they will be phenotypically normal and will act as carrier .
Phenotypically normal but carrier father (Aa) × phenotypically normal but carrier mother (Aa)
| A ( father's gamet) | a ( father's gamet) | |
| A (mother's gamet) | AA | Aa |
| a (mother's gamet) | Aa | aa (albino child ) |
1st option is wrong as albinism is recessive trait.
3rd option is also wrong because heterozygous condition (Aa) can not express albinism.
4th option is also wrong because hemizygous conditions is seen in case of sex linked trait ( male carries single X Chromosome hence known as hemizygous) and albinism is autosomal.
5th option is also wrong as information is enough and child 's genotype is homozygous aa ( recessive trait)
Add Answer to:
Albinism (lack of skin pigmentation) is caused by a recessive mutation on one of the autosomal...
Albinism (lack of skin pigmentation) is caused by a recessive mutation on one of the autosomal...
Albinism (lack of skin pigmentation) is caused by a recessive mutation on one of the autosomal chromosomes. A man and woman, both with normally pigmented skin, have an albino child together. The couple decide to have a second child. What is the probability that this second child will also be albino? zero O twenty-five % O fifty % seventy five % o one hundred %
albinism is caused by a recessive QUESTION 6 Albinism (lack of skin and hair pigmentation) is...
albinism is caused by a recessive
QUESTION 6 Albinism (lack of skin and hair pigmentation) is caused by a recessive autosomal allele. A woman and man both normally pigmented, have an albino child together. For this trait, what is the genotype of the albino child? O A. It is unknown, because not enough information is provided. O B. heterozygous O C. homozygous dominant OD.homozygous recessive O E. It depends on the environment that the child lives in. QUESTION 7 in...
1. In carnations, the heterozygous plants have pink flowers, while the two homozygous plants have red...
1. In carnations, the heterozygous plants have pink flowers, while the two homozygous plants have red flowers or white flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers? - 08% - 25 % - 50 % - 75 % - 100 % 2. Albinism (lack of skin pigmentation) is caused by a recessive mutation on one of the autosomal chromosomes. A man and woman, both with normally...
Albinism is a genetic disorder caused by an autosomal recessive allele. The dominant allele results in...
Albinism is a genetic disorder caused by an autosomal recessive allele. The dominant allele results in the wildtype pigmentation. a) If an albino marries a homozygous person for the wildtype pigmentation allele, what would be the expected phenotype and genotype of their children? b) If an albino marries a person with wildtype pigmentation but that carries the albino allele, what would be the expected phenotypes and genotypes of their children? c) Two parents of wildtype pigmentation had an albino child....
In humans, albinism is caused by a recessive allele (a) while normal pigmentation is caused by...
In humans, albinism is caused by a recessive allele (a) while normal pigmentation is caused by the dominant allele (A). a) If two pigmented parents have an albino child, what must the genotypes of the parents be? b) What is the probability that if they have another child, that child will be albino? c) What is the probability that the next two children are albinos? d) What is the probability that they have one albino and one pigmented child? Be...
3. Albinism is recessive to normal skin pigmentation. A man who is a carrier for albinism...
3. Albinism is recessive to normal skin pigmentation. A man who is a carrier for albinism but has normal pigmentation marries an albino woman. What are the genotypic and phenotypic ratios of possible children? 4. Left-handedness is caused by a recessive allele. A left-handed woman whose father and mother are right-handed marries a right-handed man whose mother is left-handed, father is right-handed and sister is left-handed. a. Determine the genotypes of all these people: left-handed woman's right-handed father: left-handed woman's...
9. In humans, normal pigmentation is due to a dominant gene (C), albinism to it's recessive...
9. In humans, normal pigmentation is due to a dominant gene (C), albinism to it's recessive allele (c). A normal pigmented man has children with an albino woman. Their first child is an albino. What are the genotypes of each of these three people? IF THEY HAD MORE CHILDREN, WHAT WOULD BE THE GENOTYPIC AND PHENOTYPIC RATIO PROBABILITIES? EXPLAIN YOU REASONING!! SHOW YOUR WORK USING A PUNNETT SQUARE!! Wor m mentation(c)
Albinism in the Agouti is caused by the homozygous recessive genotype for a gene that would...
Albinism in the Agouti is caused by the homozygous recessive genotype for a gene that would otherwise serve to activate the expression of pigment forming genes. These pigment forming genes (if active) result in either brown (recessive trait) or black fur (dominant trait). If a male and female Agouti, each of whom are heterozygous for both the pigment activating gene and the pigment forming gene, then what is the likelihood that they could produce an albino offspring?
A man and woman are both of normal pigmentation, but both have one parent who is albino (without...
A man and woman are both of normal pigmentation, but both have one parent who is albino (without melanin pigmentation). Albinism is an autosomal (not sex-linked)recessive trait. What is the probability that their first female child will have albinism?
Albinism, the total lack of pigment, is due to a recessive gene. A man and woman...
Albinism, the total lack of pigment, is due to a recessive gene. A man and woman plan to marry and wish to know the probability of their having any albino children. What are the probabilities if: a. both are normally pigmented, but each has one albino parent. b. the man is an albino, the women is normal, but her father is an albino. (Draw pedigrees to explain)
Albinism (lack of skin pigmentation) is caused by a recessive mutation on one of the autosomal chromosomes. A man and woman, both with normally pigmented skin, have an albino child together. The couple decide to have a second child. What is the probability that this second child will also be albino? zero O twenty-five % O fifty % seventy five % o one hundred %
albinism is caused by a recessive
QUESTION 6 Albinism (lack of skin and hair pigmentation) is caused by a recessive autosomal allele. A woman and man both normally pigmented, have an albino child together. For this trait, what is the genotype of the albino child? O A. It is unknown, because not enough information is provided. O B. heterozygous O C. homozygous dominant OD.homozygous recessive O E. It depends on the environment that the child lives in. QUESTION 7 in...
3. Albinism is recessive to normal skin pigmentation. A man who is a carrier for albinism but has normal pigmentation marries an albino woman. What are the genotypic and phenotypic ratios of possible children? 4. Left-handedness is caused by a recessive allele. A left-handed woman whose father and mother are right-handed marries a right-handed man whose mother is left-handed, father is right-handed and sister is left-handed. a. Determine the genotypes of all these people: left-handed woman's right-handed father: left-handed woman's...
9. In humans, normal pigmentation is due to a dominant gene (C), albinism to it's recessive allele (c). A normal pigmented man has children with an albino woman. Their first child is an albino. What are the genotypes of each of these three people? IF THEY HAD MORE CHILDREN, WHAT WOULD BE THE GENOTYPIC AND PHENOTYPIC RATIO PROBABILITIES? EXPLAIN YOU REASONING!! SHOW YOUR WORK USING A PUNNETT SQUARE!! Wor m mentation(c)
Most questions answered within 3 hours.
-
2. Qualifications for Union Office
In a 1977 decision* involving the United Steelworkers of
America, the...
asked 30 minutes ago -
Create a state machine that outputs a high signal every time the
string ‘001’ is detected....
asked 51 minutes ago -
Use standard reduction potentials to calculate ΔG° for the
reaction: S2- + 4 Cl2 + 12...
asked 1 hour ago -
A 2070 kg space station orbits Earth at an altitude of 4.61×105
m. Find the magnitude...
asked 1 hour ago -
Of
the 94 participants in a drug trial who were given a new
experimental treatment for...
asked 1 hour ago -
Journalize the entries to record the following:
Check No. 12-375 is issued to establish a petty...
asked 2 hours ago -
if
a mammalian cell shows one or more Barr bodies, what is the most
likely sex...
asked 3 hours ago -
Compare and contrast the roles of oncogenes and tumor
suppressors in oncogenesis. How were each discovered...
asked 5 hours ago -
Year
0
1
2
3
4
5
Cash Flow
$-2,500,000
$425,000
$350,000
$275,000
$225,000
$2,625,000
Your...
asked 4 hours ago -
What allows you to relate the mass and temperature of a
molecule to its linear velocity?...
asked 5 hours ago -
A stock's price is $20 at the beginning of a year. There is a 25
percent...
asked 6 hours ago -
a.What is the magnitude of the net gravitational force on the
m1=21kg mass in the figure?(Figure...
asked 7 hours ago