Incomplete Dominance & Codominace

Front

What is Incomplete Dominance?

Back

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

Front

What is Codominance?

Back

A genetic situation where both alleles in a heterozygous individual are fully expressed, resulting in offspring with a phenotype that shows both traits equally.

Front

What is the phenotypic ratio when crossing two speckled flowers (RB x RB)?

Back

1 red, 2 speckled, 1 blue.

Front

What is the phenotypic ratio when crossing a red flower (RR) with a speckled flower (RB)?

Back

2 red, 2 speckled.

Front

What is the phenotypic ratio when crossing a red flower (RR) with a blue flower (BB)?

Back

4 speckled.

Front

What are the genotypes for red, blue, and speckled flowers in codominance?

Back

Red flowers: RR, Blue flowers: BB, Speckled flowers: RB.

Front

What is the definition of a phenotype?

Back

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

What is the definition of a genotype?

Back

The genetic constitution of an individual, consisting of the alleles inherited from both parents.

Front

What is the phenotypic ratio when crossing a red radish (RR) with a purple radish (Rr)?

Back

2 red, 2 purple.

Front

What is the difference between dominant and recessive alleles?

Back

A dominant allele is expressed in the phenotype even if only one copy is present, while a recessive allele is only expressed when two copies are present.