Punnett Squares

Multiple Choice

What is the definition of a Punnett Square?

• A graphic used to predict the results of a genetic cross.

• Having two different alleles for the same gene

• The entire genetic makeup of an organism; also the combination of genes for one or more specific traits.

• In genetics, describes an allele that is fully expressed whenever the allele is present in an individual.

Multiple Select

What are two things to remember when completing a Punnett Square?

• Can be used with one or two parents

• Can only be used with two parents

• Both sides may or may not be used

• Both sides will be used

Multiple Choice

How much is the entire Punnett Square worth?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

How much is each individual cell within a Punnett Square worth?

• 25%

• 50%

• 75%

• 100%

Match

Match the term to its correct description.

• Having two identical alleles for the same gene.

• Having two different alleles for the same gene

• In genetics, describes an allele that is fully expressed whenever the allele is present in an individual.

• In genetics, describes an allele that is expressed only when no dominant allele is present in an individual.

• The entire genetic makeup of an organism; also the combination of genes for one or more specific traits.

Homozygous

Heterozygous

Dominant Allele

Recessive Allele

Genotype

• Homozygous

• Heterozygous

• Dominant Allele

• Recessive Allele

• Genotype

Multiple Choice

Based on the Punnett square what is the probability that their offspring will inherit the blue eye color allele?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

Additionally, what is the probability that their offspring will inherit the brown eye color allele?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

The diagram shows an incomplete Punnett square that represents a trait passed from parents to offspring.

What is the perfect chance that the offspring are homozygous dominant for the trait?

• 0%

• 25%

• 50%

• 75%