WW cross ww
Gamet. Gamet

Form. Form
W. × w
We find Ww f1 generation [character mix]
Ww× Ww
=WW. Ww. Ww ww. F2 generation
1:2;1 genotype 1-black female

1:3 phenotype 1-white male
2 mix colour male

Introduction:
When a homozygous white male rabbit (WW) is crossed with a black female rabbit (ww), the resulting offspring in the F1 generation and F2 generation can be determined using Mendelian genetics.

F1 Generation:
The F1 generation is the first generation of offspring resulting from the cross between the homozygous white male (WW) and the black female (ww) rabbit. In this case, all the offspring in the F1 generation will be heterozygous for the coat color gene, resulting in a genotype of Ww.

F2 Generation:
The F2 generation is the second generation of offspring resulting from the cross between the F1 generation rabbits. The F1 generation rabbits (Ww) can produce four possible genotypes in the F2 generation, which are WW, Ww, wW, and ww.

Phenotypic Ratio:
The phenotypic ratio in the F2 generation can be determined based on the genotypes of the offspring. In this case, the white coat color is determined by the presence of the dominant allele (W), while the black coat color is determined by the recessive allele (w).

- WW genotype: Homozygous dominant genotype, resulting in white coat color.
- Ww genotype: Heterozygous genotype, resulting in white coat color.
- wW genotype: Heterozygous genotype, resulting in white coat color.
- ww genotype: Homozygous recessive genotype, resulting in black coat color.

The phenotypic ratio in the F2 generation is expected to be:
- 1 white: 2 black

Genotypic Ratio:
The genotypic ratio in the F2 generation can be determined based on the possible combinations of the alleles from the F1 generation.

The possible genotypes in the F2 generation are:
- WW: 1/4 probability
- Ww: 2/4 probability
- wW: 2/4 probability
- ww: 1/4 probability

The genotypic ratio in the F2 generation is expected to be:
- 1 WW: 2 Ww: 1 ww

Conclusion:
When a homozygous white male rabbit (WW) is crossed with a black female rabbit (ww), the F1 generation will consist of heterozygous offspring (Ww). In the F2 generation, there will be a phenotypic ratio of 1 white: 2 black and a genotypic ratio of 1 WW: 2 Ww: 1 ww.