Achondroplasia (dwarfism) is an autosomal dominant disorder.A dwarf mother and a dwarf father have 4 children.The first 2 are dwarfs, and the last 2 are of normal height.
1)What are the chances of a non-dwarf child from this union?

2)What is the mother’s genotype?

3)What is the father’s genotype?

Color-blindness is a sex-linked recessive disorder.A heterozygous female mates with a male with a colorblind male.

4)What are the chances of this couple having a child who is color-blind?

Question

Achondroplasia (dwarfism) is an autosomal dominant disorder.A dwarf mother and a dwarf father have 4 children.The first 2 are dwarfs, and the last 2 are of normal height.
1)What are the chances of a non-dwarf child from this union?

2)What is the mother’s genotype?

3)What is the father’s genotype?

Color-blindness is a sex-linked recessive disorder.A heterozygous female mates with a male with a colorblind male.

4)What are the chances of this couple having a child who is color-blind?

anonymous · Answer

2)tt
3)tt
4)3:1 chances