Mendel genetics

Front

What is the genotype of two black mice that produce both black and brown offspring?

Back

Bb x Bb

Front

What does a Punnett Square represent in genetics?

Back

A tool used to predict the genetic makeup of offspring from parental genotypes.

Front

What can a Punnett Square help you determine?

Back

It helps determine the ratio of phenotypes, the ratio of genotypes, and predict possible traits of the offspring.

Front

If two heterozygous rats for fur color are mated, what is the expected outcome in terms of genotypes and colors?

Back

Three different genotypes and two different colors.

Front

What are pairs of genes that control the same trait called?

Back

Alleles.

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 is the phenotype of an organism?

Back

The observable physical characteristics or traits of an organism.

Front

What is the genotype of an organism?

Back

The genetic makeup or combination of alleles of an organism.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.