Question

genetic inheritance: passing of recessive x linked traits from father to son
if a male who is color blind (a recessive x - linked trait) has children with a female who is not color blind (and homozygous dominant), what is the probability their son will be color blind?
multiple choice
25%
75%
100%
50%
0%

Explanation:

Step1: Determine the genotypes

• Let \(X^c\) represent the color - blind allele and \(X^C\) represent the normal allele.
• The male is color - blind, so his genotype is \(X^cY\).
• The female is homozygous dominant (not color - blind), so her genotype is \(X^CX^C\).

Step2: Analyze the inheritance for sons

• Sons inherit the \(Y\) chromosome from the father and an \(X\) chromosome from the mother.
• The mother (\(X^CX^C\)) can only pass on \(X^C\) to her sons.
• The father (\(X^cY\)) passes on the \(Y\) chromosome to his sons (since sons get \(Y\) from father and \(X\) from mother).

Answer:

0%