Incomplete and CoDominance

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two parental traits.

Front

Provide an example of incomplete dominance in animals.

Back

An example of incomplete dominance is seen in certain breeds of cats, where the fur color can be black, white, or gray, depending on the alleles inherited.

Front

What is co-dominance?

Back

Co-dominance is a genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits simultaneously.

Front

Give an example of co-dominance in animals.

Back

An example of co-dominance is the checkered pattern in chickens when a black chicken is crossed with a white chicken, producing offspring that display both colors.

Front

What phenotype results from a cross between a black chicken and a white chicken?

Back

The phenotype resulting from this cross is checkered chickens, demonstrating co-dominance.

Front

In a Punnett square, what does a 0% chance of a trait indicate?

Back

A 0% chance of a trait indicates that the trait will not appear in the offspring based on the genetic cross being analyzed.

Front

What is the phenotype of a calico cat?

Back

A calico cat exhibits both orange and black fur, which is an example of co-dominance.

Front

How does incomplete dominance differ from complete dominance?

Back

In complete dominance, one allele completely masks the effect of another, while in incomplete dominance, the traits blend to form a new phenotype.

Front

What is the expected phenotype ratio in a cross showing co-dominance?

Back

In a cross showing co-dominance, the expected phenotype ratio can be 1:2:1, where each phenotype is distinctly represented.

Front

What type of inheritance pattern is shown when both alleles are expressed equally?

Back

The inheritance pattern shown when both alleles are expressed equally is called co-dominance.