In humans, enamel hypoplasia (dental disease) is caused by a dominant gene linked to the X chromosome

In humans, enamel hypoplasia (dental disease) is caused by a dominant gene linked to the X chromosome, and hypertrichosis (hair growth on the edge of the auricle) is caused by a gene located on the Y chromosome. A man with hypertrichosis marries a woman with enamel hypoplasia. It is known that the mothers of both the spouses did not have the above anomalies. 1) what is the probability that a child in this family will inherit both defects (in%) 2) how many different genotypes can there be among the children of this family? 3) how many different phenotypes can there be among the children of this family? 4) What is the probability that a child in this family will inherit the mother’s genotype (in%) 5) What is the probability of a daughter with hypertrichosis being born in this family?

Let A – hypoplasia of the teeth, and – the norm. These genes are found on the X chromosome. B – hypertrichosis, it is linked to the Y chromosome.
РР f ХАХа х m ХаУВ
g f/m Ха УВ
ХА ХАХа д.г. ХАУВм.г.г.
Ха ХаХа д.н. ХаУВм.н.г.
Children in this family will have four genotypes and phenotypes. Hypertrichosis (hair growth along the edge of the auricle) can only be in boys – the gene is located on the X chromosome. The probability of having children with two anomalies is 25%, and that’s just boys. The birth of girls with the mother’s genotype is possible with a probability of 25%.