Genetics: Mendel's Laws

Front

What is a heterozygous genotype?

Back

A heterozygous genotype consists of two different alleles for a particular gene, such as Mm.

Front

What is a homozygous dominant genotype?

Back

A homozygous dominant genotype consists of two identical dominant alleles for a particular gene, such as RR.

Front

What does the Punnett square represent in genetics?

Back

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

Front

What is a genetic trait?

Back

A genetic trait is a characteristic or feature of an organism that is inherited from its parents, such as eye color.

Front

What is the field of science that studies inheritance?

Back

Genetics is the field of science that studies how traits are passed on, or inherited.

Front

What is the difference between phenotype and genotype?

Back

Phenotype refers to the observable characteristics of an organism, while genotype refers to the genetic makeup.

Front

What is a dominant trait?

Back

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

Front

What is a recessive trait?

Back

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

Front

What does it mean for an organism to be homozygous?

Back

An organism is homozygous when it has two identical alleles for a particular gene, either dominant or recessive.

Front

What is the purpose of a test cross in genetics?

Back

A test cross is used to determine the genotype of an organism with a dominant phenotype by crossing it with a homozygous recessive organism.