Do a punnett square for the cross shown below between a male and female, both with Hemophilia, an X-linked recessive disease. Females are represented by a circle and males by a square. Darkened shapes mean the individual has the diseas

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Hemophilia is an X-linked recessive disease. Let the normal allele be represented as XH and the mutant allele be represented as Xh. Here,

hemophilic male = XhY

hemophilic female = XhXh

When XhY  X   XhXh the punnett square will be as follows:          

        Xh       Y

Xh  XhXh   XhY

Xh  XhXh   XhY

The entire progeny will be hemophilic since only Xh allele was passed on by both the parents.

the growth of the plants is affected by the heat of the light. what is the student doing?