Genetics Review

Front

What is a carrier in genetics?

Back

An individual who has one copy of a recessive allele that does not manifest in their phenotype, but can pass it to offspring.

Front

What does phenotype refer to?

Back

The physical appearance or observable traits of an individual, such as hair color or height.

Front

What is genotype?

Back

The genetic makeup of an individual, represented by the alleles they possess.

Front

How many children did the parents in the first generation have?

Back

4

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.

Front

What is an example of a phenotype?

Back

Red hair.

Front

What does it mean if an individual is heterozygous?

Back

It means the individual has two different alleles for a particular gene.

Front

What is the definition of allele?

Back

An allele is a variant form of a gene that can produce different traits.

Front

What is the significance of dominant alleles?

Back

Dominant alleles are expressed in the phenotype even if only one copy is present.

Front

What is a recessive allele?

Back

A recessive allele is only expressed in the phenotype if two copies are present.