Form: Dihybrids, Incomplete, Codominance, Blood Types 12.3& 12.4

Front

What is a dihybrid cross?

Back

A genetic cross that involves two traits, each represented by two alleles.

Front

Define incomplete dominance.

Back

A genetic situation where one allele does not completely dominate another, resulting in a phenotype that is a blend of the two.

Front

What is codominance?

Back

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

Front

What are the possible genotypes for blood type A?

Back

AA or AO.

Front

What are the possible genotypes for blood type B?

Back

BB or BO.

Front

What are the possible genotypes for blood type AB?

Back

AB only.

Front

What are the possible genotypes for blood type O?

Back

OO only.

Front

What does it mean if a trait has multiple alleles?

Back

It means that there are three or more alternative forms of a gene that can occupy the same locus.

Front

What is the genotype for a pea plant that is heterozygous for round seeds (R) and homozygous recessive for green seeds (y)?

Back

Rryy.

Front

In a cross between a type O blood individual and a type AB blood individual, what blood types can their children have?

Back

A and B.