In pigs, eye color is controlled by a single gene with two alleles. A farmer crossed a homozygous green-eyed pig with a homozygous brown-eyed pig, producing blue-eyed offspring. If the blue-eyed pigs are then mated with each other, what would the percent of their offspring most likely have brown eyes?
A: 0%
B: 25%
C: 50%
D: 75%
A: 0%
B: 25%
C: 50%
D: 75%
举一反三
- In human, color blindness is caused by sex linked recessive genes, while blue eye is caused by autosomal recessive genes. A blue eyed woman whose father is color blind marries a brown eyed man whose mother is blue eyed. How many of their sons are blue eyed? ( ) A: 1/2 B: 1/3 C: 1/4 D: 3/4
- What does Pecola dream to have?( ) A: green eyes B: brown skin C: blue eyes D: blonde hair
- Hefellinlovewith_______girl. A: a blue-eye B: a blue eye C: ablue-eyed D: blue-eyed
- I don’t like the way_______he eyed me.
- In human, brown eyes (B) is dominant to blue eyes (b). The gene is located on autosome. A couple both with brown eyes has a son with blue eyes. We can know that the genotype of the couple are heterozygotes. A: 正确 B: 错误