Front

What is the genetic makeup of an organism called?

Back

Genotype

Front

What is the phenotype?

Back

The physical trait that is expressed.

Front

Which genotype is heterozygous?

Back

Bb

Front

What is a dihybrid cross?

Back

A genetic cross involving two traits.

Front

What goes in box 6 of a Punnett square for a dihybrid cross?

Back

AaBB

Front

What are alleles?

Back

Different forms of a gene.

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.

Front

What does homozygous mean?

Back

Having two identical alleles for a trait.

Front

What does heterozygous mean?

Back

Having two different alleles for a trait.