Genetics Review Quiz

Which of the following allele pairs is heterozygous?

• RR

• Qq

• ss

Which of the following allele pairs is homozygous?

• Ee

• BB

• Tt

Which of the following allele pairs is homozygous recessive?

• RR

• Rr

• rr

Look at the punnett square shown. What allele pair would replace the "?"

• WW

• Ww

• ww

Look at the punnett square shown. What is the probability that the offspring will show the dominant trait?

• 100%

• 75%

• 50%

• 25%

• 0%

Look at the punnett square. What is the probability of the offspring showing the recessive trait?

• 100%

• 75%

• 50%

• 25%

• 0%

Look at the punnett square. What is the probability that the offspring's alleles will be homozygous dominant?

• 100%

• 75%

• 50%

• 25%

• 0%

Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?

• 100%

• 75%

• 50%

• 25%

• 0%

Webbed fingers (F) are dominant over nonwebbed fingers (f). If parent A (Ff) and parent B (Ff) have children, which of the following are true? Select all that apply

• Phenotypes: 75% chance of having webbed fingers and 25% chance of not.

• Phenotypes: 100% chance of having webbed fingers and 0% chance of not.

• Phenotypes: 25% chance of having webbed fingers and 75% chance of not

• Genotypes: FF 25%, Ff 50%, ff 25%

• Genotypes: FF 75%, Ff 50%, ff 25%

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow