Dihybrid - dihybrid crosses look at the possibility of inheriting two traits. In rabbits, long hair (L) is dominant over short hair (l) and black hair (B) is dominant over white hair (b).

Question

Dihybrid - dihybrid crosses look at the possibility of inheriting two traits. In rabbits, long hair (L) is dominant over short hair (l) and black hair (B) is dominant over white hair (b).

1. What are the genotypes for:
● Homozygous dominant for both traits ________________________
● Heterozygous for both traits ________________________
● Homozygous recessive for both traits ________________________
2. What are the genotypes for the following phenotypes?
● Rabbit with long, white hair ______________________ or ______________________
● Rabbit with short, black hair ______________________ or ______________________
● Rabbit with short, white hair ______________________

Answer 1

1. The genotypes for:

- Homozygous dominant for both traits: LLBB
- Heterozygous for both traits: LlBb
- Homozygous recessive for both traits: llbb

2. The genotypes for the following phenotypes:
- Rabbit with long, white hair: Llbb or LLbb
- Rabbit with short, black hair: llBb or llBB
- Rabbit with short, white hair: llbb