Codominance

Front

What is codominance?

Back

Codominance is a genetic scenario where both alleles in a heterozygous individual contribute equally and visibly to the organism's phenotype.

Front

What is an example of codominance in cats?

Back

In cats, the allele for tan fur (T) and the allele for black fur (B) are codominant, resulting in a tabby cat (TB) with both tan and black spots.

Front

What phenotype results from crossing a black chicken (BB) with a white chicken (WW)?

Back

The phenotype is called erminette or checkered (BW), showing both black and white feathers.

Front

What are the possible phenotypes when a checkered chicken (BW) is crossed with a black chicken (BB)?

Back

The possible phenotypes are 50% black (B) and 50% checkered (BW).

Front

What are the genotypes of offspring from a checkered chicken (BW) crossed with a black chicken (BB)?

Back

The genotypes are 50% BB and 50% BW.

Front

If two checkered chickens (BW) are crossed, what are the chances of producing a checkered chicken?

Back

There is a 50% chance of producing a checkered chicken.

Front

What is the genotype of a tabby cat?

Back

A tabby cat has the genotype TB, where T is for tan fur and B is for black fur.

Front

What are the chances of producing a tan cat when crossing a tan cat (TT) with a tabby cat (TB)?

Back

There is a 50% chance of producing a tan cat.

Front

What are the chances of producing a black cat when crossing a tan cat (TT) with a tabby cat (TB)?

Back

There is a 0% chance of producing a black cat.

Front

What is the phenotype of a chicken with genotype WW?

Back

The phenotype is white feathers.