Genetics Vocab

Front

What is a homozygous dominant genotype?

Back

A genotype with two identical dominant alleles (e.g., MM).

Front

What is a homozygous recessive genotype?

Back

A genotype with two identical recessive alleles (e.g., tt).

Front

What does heterozygous mean?

Back

A genotype with one dominant and one recessive allele (e.g., Aa).

Front

What is a Punnett Square used for?

Back

A tool used to predict the genetic outcomes of a cross between two organisms.

Front

What is the probability of an offspring being homozygous dominant if both parents are heterozygous?

Back

25%.

Front

What is the probability of an offspring being homozygous recessive if one parent is homozygous dominant and the other is homozygous recessive?

Back

0%.

Front

Define allele.

Back

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

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the observable traits.

Front

What does it mean for a trait to be dominant?

Back

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

Front

What does it mean for a trait to be recessive?

Back

A recessive trait is expressed in the phenotype only when two recessive alleles are present.