Monohybrid Punnett Squares

Round seeds (R) are dominant over wrinkled seeds (r). What percentage of the offspring will be round from the following cross?
Rr X Rr

• 100%
• 75%
• 50%
• 25%

Round seeds (R) are dominant over wrinkled seeds (r). What percentage of the offspring will be round from the following cross?
RR X Rr

• 100%
• 75%
• 50%
• 25%

A tall pea plant (TT) is crossed with a short pea plant (tt). What percentage of the offspring will be tall?

• 100%
• 75%
• 50%
• 25%

Tt X Tt
What percentage of the offspring will be short?
T = tall 
t = short

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

A heterozygous round seeded plant (Rr) is crossed with a homozygous dominant round seeded plant (RR). What percentage of the offspring will be homozygous dominant?

• 100%
• 75%
• 50%
• 25%

A homozygous dominant round seeded plant is crossed with a homozygous recessive wrinkled seeded plant. What are the genotypes of the parents?

• RR X rr
• Rr X rr
• rr X rr
• RR X Rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What percentage of the offspring will be homozygous recessive?
R = round
r = wrinkled

• 75%
• 50%
• 25%
• 0%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In pea plants, purple flowers are dominant to white flowers. If two white flowered plants are crossed, what percentage of their offspring will have white flowers?

• 100%
• 75%
• 25%
• 0%

In pea plants, purple flowers are dominant to white flowers. A white flowered plant is crossed with a plant that is heterozygous for purple flowers. What percentage of the offspring will have purple flowers?

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-3

In pea plants, purple flowers are dominant to white flowers. If two heterozygous purple plants are crossed what percentage of their offspring will be purple? What percentage of their offspring will be white?

• 100% purple, 0% white
• 75% purple, 25% white
• 50% purple, 50% white
• 25% purple, 75% white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2