Question

Colorclindness is a recessive x-linked disorder. Which genotype represents a male with normal vision

Answer 1

In males, the genotype consists of one X chromosome and one Y chromosome (XY). Since colorblindness is a recessive X-linked disorder, a male with normal vision would have a normal allele on his X chromosome. The genotype representing a male with normal vision would be:

**X^N Y**

Here, \(X^N\) indicates the normal vision allele on the X chromosome, and the Y chromosome does not carry a color vision allele.