AP Bio Genetics

Front

What is the definition of a dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present in the genotype.

Front

What is the definition of a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present in the genotype.

Front

What is the genotype of a homozygous individual?

Back

A homozygous individual has two identical alleles for a particular gene (e.g., BB or bb).

Front

What is the genotype of a heterozygous individual?

Back

A heterozygous individual has two different alleles for a particular gene (e.g., Bb).

Front

What is codominance in genetics?

Back

Codominance is a genetic scenario where both alleles in a heterozygous individual are fully expressed, resulting in a phenotype that is neither dominant nor recessive.

Front

What is the phenotype of a heterozygous chicken with black and white feather alleles?

Back

The phenotype will be speckled black and white feathers.

Front

What blood types are possible for a child with blood type O?

Back

The possible blood types for the parents are iAiO, iBiO, and iOiO.

Front

What is the expected percentage of offspring with black hair when crossing a homozygous black-haired guinea pig with a heterozygous black-haired guinea pig?

Back

100% of the offspring are expected to have black hair.

Front

What is the definition of a genotype?

Back

A genotype is the genetic makeup of an individual, consisting of the alleles inherited from the parents.

Front

What is the definition of a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.