Genetics

Front

What does homozygous mean?

Back

Having two of the same genes for a trait (sometimes called purebred).

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

Which genotype is homozygous recessive?

Back

tt.

Front

What is a purebred genotype?

Back

A genotype that has two identical alleles, such as bb.

Front

What does heterozygous mean?

Back

Having two different genes for a trait (sometimes called hybrid).

Front

What is a genotype?

Back

The genetic makeup or code of an organism.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the physical expression of that makeup.

Front

What are alleles?

Back

Different forms of a gene that can exist at a specific locus.

Front

What is a dominant allele?

Back

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

Front

What is a recessive allele?

Back

An allele that only expresses its trait when two copies are present.