A normally pigmented man (dominant) marries an albino woman
(recessive). They have 3 children, one of whom is an
albino. What is the genotype of the man?
Answers were Sorted based on User's Feedback
Answer / margaret
If the dominant normal gene is A, and the recessive albino
gene is a, then the man's genotype is
Aa
Is This Answer Correct ? | 36 Yes | 2 No |
Answer / prussian embassy
To correctly answer the question, the normally pigmented
man would be "Aa": A for his dominant trait of normal
pigmentation, and "a" for the gene of albinism.
Reasons supporting this answer are this; for a recessive
trait to show itself by any means, it would need to be the
only factors in the gene. Together, they look something
like this.
A x
,-------
a |Aa |ax |
|___|___|
|Aa |ax |
a |___|___|
The genotype of the children are Aa, Aa, and aa.
For there to be a posibility of having a child albino, the
normally pigmented man must have the ressesive gene.
Therefore turning the chart above into this.
A a
,-------
a |Aa |aa |
|___|___|
|Aa |aa |
a |___|___|
In the end, it proves that the normally pigmented man's
genotype is "Aa": A for his dominant trait of normal
pigmentation, and "a" for the gene of albinism.
Is This Answer Correct ? | 13 Yes | 1 No |
Answer / taofeeq
The genotype of the man is Aa (He is a carrier of the gene
for albinism(a). The Child can only express the trait when
he/she inherits the albinism gene(a). The child genotype
will then ber aa.
Is This Answer Correct ? | 13 Yes | 4 No |
what is co-dominance ?
In mice colored coat is dominant to albinism. Sniffles, a male mouse with a colored coat is mated to Esmeralda, an alluring albino. The resulting litter of six young all had colored fur. The next time around Esmeralda was mated with Whiskers, who was the same color as Sniffles; some of this litter were white. a)What are the probable genotypes of Sniffles, Esmeralda, and Whiskers? b) If a male of the 1st litterwas mated to a colored female of the 2nd litter, what phenotypic ratio might be expected among the offspring? c)What would be the expected results if a male of the 1st litter was mated to an albino from the 2nd?
What is the chemical composition of gene?
which protein contains all the 20 amino acids?
In cats yellow is due to gene B and black to its allele b. These genes are located on the X chromosome (sex-linked). The heterozygous results in calico (tortoise shell). What kinds of offspring (sex & color) are expected from the cross: black male & calico female? Most calico males are sterile, why?
The village of Oblong has 400 normally-shaped residents. Transferrin is an iron carrier found in blood, and electrophoretic variation of this protein is determined by an autosomal codominant system. The citizens of Oblong were typed for their transferrin complements. The distribution of transferrin phenotypes was: 100 CC, 100 CD, and 200 DD. What is the frequency of the C allele?
Is Jurassic Park -- Completely impossible?
What is the difference betwee bacteriostatic and bacteriocidal?
A normal woman whose father was a hemophiliac marries a normal man. What are the chances of hemophilia occurring in their children?
What is the artificial synthesis of DNA?
If a fly has a diploid number of 12, how many chromosomes would there be in each cell at the end of telophase of mitosis?
Can DNA survive to intense heat?