Punnett Square Review

Front

What is the genotype for a yellow plant if G = green and g = yellow?

Back

gg

Front

In a heterozygous genotype, which allele takes over in the phenotype?

Back

dominant

Front

What does the genotype 'aa' always show up as?

Back

recessive

Front

If you cross a black chicken with a white chicken and only checkered chickens are produced, what kind of inheritance pattern does this follow?

Back

Co-Dominance

Front

What is the expected probability of offspring colors when a roan cow and a roan steer mate?

Back

25% Red, 50% Roan, 25% White

Front

What is a Punnett Square used for?

Back

To predict the genotypes and phenotypes of offspring from a genetic cross.

Front

Define dominant allele.

Back

An allele that expresses its phenotype even in the presence of a recessive allele.

Front

Define recessive allele.

Back

An allele that only expresses its phenotype when two copies are present.

Front

What is incomplete dominance?

Back

A genetic situation where one allele does not completely dominate another, resulting in a third phenotype.

Front

What is co-dominance?

Back

A genetic situation where both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.