Assuming that brown colour is dominant over black colour in cowpea, what percentage of the F1 will have brown colour , if a homozygous brown cowpea is cross...

Assuming that brown colour is dominant over black colour in cowpea, what percentage of the F1 will have brown colour , if a homozygous brown cowpea is crossed with a homozygous black cowpea?

Answer Details

The offspring resulting from the cross of a homozygous brown cowpea and a homozygous black cowpea are called F1 generation. Assuming that brown color is dominant over black color, the genotype of the homozygous brown cowpea can be represented as BB (where B represents the allele for brown color) and the genotype of the homozygous black cowpea can be represented as bb (where b represents the allele for black color). When these two plants are crossed, all the F1 offspring will be heterozygous (Bb) because they receive one allele from each parent. Since brown color is dominant over black color, all the heterozygous offspring will display the brown color. Therefore, the percentage of F1 offspring with brown color will be 100%. In summary, if a homozygous brown cowpea is crossed with a homozygous black cowpea, all the F1 offspring will be heterozygous (Bb) and display the dominant brown color. Thus, the percentage of F1 offspring with brown color will be 100%.