Punnett Square Practice

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

A person heterozygous for wet earwax (Ww) mates with a person homozygous recessive for dry earwax. What is the chance their baby is heterozygous?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Two mice heterozygous for red eyes mate. What is the expected genotypic ratio of their offspring?

• 1 RR: 1 Rr: 1 rr
• 0 RR: 4 Rr: 0 rr
• 1 RR: 2 Rr: 1 rr
• 1 RR: 1 Rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?

• 1
• 2
• 3
• 4

Which of the following is a phenotype?

• Aa

• red hair

• heterozygous

• DNA

• I don't know.

Which of the following is NOT a genotype?

• heterozygous
• a trait
• Bb
• homozygous recessive