1. In humans, normal pigmentation is due to a dominant gene A. Albinism is due to the recessive allele a. A man without albinism marries an albino woman and their first child is an albino. What are the genotypes of these 3 people? a. Mother: b. Father: c. Child: 2. In humans, achondroplasia “dwarfism” (D) is dominant over normal (d). A homozygous dominant (DD) person dies before the age of one. A heterozygous (Dd) person is dwarfed. A homozygous recessive individual is normal. A heterozygous dwarf man marries a heterozygous dwarf woman… a. What is the probability of having a normal child? b. What is the probability that the next child will also be normal? c. What is the probability of having a child that is a dwarf? Define the following terms: 1. Autosome: 2. Sex chromosome: 3. Carrier:
1. In humans, normal pigmentation is due to a dominant gene A. Albinism is due to the recessive allele a. A man without albinism marries an albino woman and their first child is an albino. What are the genotypes of these 3 people?
a. Mother:
b. Father:
c. Child:
2. In humans, achondroplasia “dwarfism” (D) is dominant over normal (d). A homozygous dominant (DD) person dies before the age of one. A heterozygous (Dd) person is dwarfed. A homozygous recessive individual is normal. A heterozygous dwarf man marries a heterozygous dwarf woman…
a. What is the probability of having a normal child?
b. What is the probability that the next child will also be normal?
c. What is the probability of having a child that is a dwarf?
Define the following terms:
1. Autosome:
2. Sex chromosome:
3. Carrier:
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