Punnett Square

In the punnett square, what is the second parent's genotype?

• bb

• BB

• Bb

• Brown Fur

Tags

NGSS.HS-LS3-1

Two brown eyed parents (Bb) have a baby. What is the ratio of Brown eyes to Blue eyes?

• 0:4

• 3:1

• 2:2

• 1:3

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Why do scientist use Punnett Squares?

• A tool scientist use to to see alleles

• A tool scientist use to see which alleles are dominant

• A tool scientist use to determine possible genotypes for offspring

Tags

NGSS.HS-LS3-3

According to this Punnett square​ (a)   of the offspring will be homozygous dominant, ​ (b)   Of the offspring will be heterozygous, and the remaining 25% will be homozygous ​ (c)   . As for the phenotypes, ​ (d)   of the flowers will be ​ (e)   .

• 25%

• 50%

• recessive

• 75%

• pink

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

T - tall and t = short. In the Punnett square below, what belongs in the missing square (a)  

• tt

• Tt

• Bb

• TT

Tags

NGSS.HS-LS3-1

Complete the punnett square

a

b

c

d

T T

t t

T t - top row

T t - bottom row

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

According to this Punnett square ​ (a)   Of the offspring will be homozygous dominant, ​ (b)   Of the offspring will be heterozygous, and the remaining 25% will homozygous ​ (c)   . As for the phenotypes, ​ (d)   Of the flowers will be ​ (e)   .

• 25%

• 50%

• recessive

• 75%

• pink

• 100%

• White

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Select the boxes in the Punnett Square where you would find heterozygous offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

Fill in the missing genotypes

a

b

BB

Bb

bB

bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2