Genetics Review

Front

What are alleles?

Back

Different versions of a gene.

Front

What is the genotype for a female that is a non-tongue roller, heterozygous for widow’s peak, and has unattached earlobes?

Back

tt, Hh, Ee or EE.

Front

What is the genotypic ratio when crossing two heterozygous tongue rollers?

Back

1:2:1.

Front

What color flowers would you expect from a cross between a homozygous red and a homozygous white flower under incomplete dominance?

Back

Pink flowers only.

Front

Who is known as the 'father' of genetics?

Back

Gregor Mendel.

Front

What is a homozygous genotype?

Back

A genotype with two identical alleles for a trait.

Front

What is a heterozygous genotype?

Back

A genotype with two different alleles for a trait.

Front

Define incomplete dominance.

Back

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

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 does the term 'dominant allele' mean?

Back

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