Genetics

Front

What is a sex-linked trait?

Back

A trait that is associated with a gene that is carried only by the male or female parent.

Front

What does it mean for an allele to be dominant?

Back

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

Front

What is the genotype of a female fruit fly with red eyes?

Back

X^R X^r

Front

What is the genotype of a male fruit fly with white eyes?

Back

X^r Y

Front

What is a dihybrid cross?

Back

A genetic cross that examines the inheritance of two different traits.

Front

What is incomplete dominance?

Back

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

Front

What color flowers result from a cross between a red flower (RR) and a white flower (WW) in snapdragons?

Back

Pink (RW) flowers.

Front

What is the probability of a child having AB blood type if one parent is AA and the other is AB?

Back

50%.

Front

What is a phenotype?

Back

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

Front

What is a genotype?

Back

The genetic constitution of an individual, often represented by alleles.