Genetics Review

Front

What is the physical appearance of the allele combination the offspring receives?

Back

Phenotype

Front

What are the letters that make up the genetic code for a trait?

Back

Genotype

Front

What is the phenotype for the recessive trait?

Back

Blue eyes

Front

What are the parents' genotypes if one is heterozygous for brown eyes?

Back

Heterozygous for brown eyes

Front

What is NOT a possible offspring genotype?

Back

BB

Front

Define 'allele'.

Back

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

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene.

Front

What is a dominant trait?

Back

A dominant trait is one that is expressed in the phenotype even when only one allele is present.

Front

What is a recessive trait?

Back

A recessive trait is one that is only expressed in the phenotype when two copies of the allele are present.