Genetics Review

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

What does the genotype 'AA' represent?

Back

The genotype 'AA' represents a homozygous dominant genotype, meaning both alleles are dominant.

Front

What does the genotype 'Aa' represent?

Back

The genotype 'Aa' represents a heterozygous genotype, meaning one allele is dominant and the other is recessive.

Front

What type of traits are represented by a capital letter?

Back

Dominant traits are represented by a capital letter.

Front

What is the chance of baby frogs having brown skin if 'G' means green skin and 'g' means brown skin, and the parents are both 'GG'?

Back

0% chance of having brown skin.

Front

If Brown eyes (B) are dominant to Blue eyes (b), what color eyes will a person with genotype 'Bb' have?

Back

They will have Brown eyes.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What is a recessive trait?

Back

A recessive trait is a trait that is only expressed when two recessive alleles are present.

Front

What does it mean if an organism is homozygous?

Back

An organism is homozygous if it has two identical alleles for a particular gene.

Front

What does it mean if an organism is heterozygous?

Back

An organism is heterozygous if it has two different alleles for a particular gene.