Consequently, a test cross can help determine whether a dominant phenotype is homozygous or heterozygous for a specific allele. Diploid organisms, like humans, have two alleles at each genetic ...

Half of the possible offspring have the same allele combination; AA homozygous dominant and the other half have the Aa heterozygous combination. Probability close probabilityThe extent to which ...

An organism that is homozygous for a specific trait carries ... which is called the F1 generation, were all heterozygous plants with round, yellow seeds and the genotype RrYy.

To generate a tissue specific knockout mouse, researchers breed a mouse bearing a Cre transgene under a tissue- or cell-type specific or inducible promoter (A) with a homozygous floxed mouse (B). The ...

Individuals A and B both have brown eyes, even though A is heterozygous and B is homozygous (dominant). Only people with a homozygous recessive genotype can have blue eyes as shown by individual C.