Genetics Test Review

Front

What is incomplete dominance in genetics?

Back

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

Front

What does the term 'heredity' refer to?

Back

Heredity is the passing of genetic traits from parents to their offspring.

Front

How are homozygous recessive alleles represented?

Back

Homozygous recessive alleles are represented by two lowercase letters, for example, 'tt'.

Front

What is a Punnett Square used for?

Back

A Punnett Square is a diagram used to predict the genotype and phenotype combinations of a genetic cross.

Front

What does the term 'genotype' mean?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles are expressed in the phenotype even when only one copy is present, while recessive alleles are only expressed when two copies are present.

Front

What is codominance?

Back

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

Front

What is the significance of the letter 'A' in genetics?

Back

In genetics, 'A' typically represents a dominant allele, while 'a' represents a recessive allele.

Front

What does it mean for an organism to be homozygous?

Back

An organism is homozygous when it has two identical alleles for a particular trait.

Front

What does it mean for an organism to be heterozygous?

Back

An organism is heterozygous when it has two different alleles for a particular trait.