Punnett Squares Practice

In the Punnett square shown, what must the genotype of the missing parent be?

• BB
• Bb
• bb
• Tt

B = brown fur  b = white fur
In the Punnett square, what is the probability for white fur? 

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What are the possible genotypes for this cross?
(Click the picture to see it without the text)

• TT = 25% Tt= 50% tt=25%
• all tall
• TT= 75% tt = 25%
• Tt = 100%

Tags

NGSS.HS-LS3-3

What is the dominant trait?

• yellow pea seeds
• green pea seeds
• there is no dominant seed
• Jolly green giant

Tags

NGSS.HS-LS3-1

What genotype would go in box 3?

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

What genotype would go in box 1?

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks? (a)  

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What is the probability of a purple-horned unicorn if a heterozygous pink-horned unicorn is crossed with a heterozygous pink-horned unicorn? (a)  

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Georgette wants to breed her pet phoenixes, but she isn't sure if the babies will burst into blue flames or red flames. Her documents show that her female phoenix is homozygous dominant for red flames, while her male phoenix is homozygous recessive for blue flames. What color flames will the babies have? (a)  

• Red
• Blue
• Purple
• 50% Red, 50% Blue

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Two parents have a heterozygous genotype for eye color. What is the chance of having a blue eye baby?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3