Punnett Squares

T - tall and t = short

In the punnett square below, what belongs in the missing square

• tt

• Tt

• Bb

• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

B = brown eyes

b = blue eyes

One brother has genotype BB and the other brother has genotype Bb.

Which statement is true about these two brothers?

• They have same phenotype and genotype

• They have different phenotypes and genotypes

• They have same phenotype, but different genotypes

• They have different phenotypes, but the same genotype

Tags

NGSS.HS-LS3-1

Which of the following genotypes is homozygous dominant?

• Yy

• yY

• yy

• YY

Tags

NGSS.HS-LS3-1

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Tags

NGSS.HS-LS3-1

What is the genotypic ratio of the offspring?

• 3:1

• 1:3

• 1:2:1

• 2:2

Tags

NGSS.HS-LS3-3

Who is considered the "father of genetics"?

• Reginald Punnett

• Gregor Mendel

• James Watson

• Charles Darwin

What are the phenotype percentages of the offspring?

(A-Brown fur color; a-white fur color)

• 50 % Brown fur and 50% White fur

• 25 % Brown fur and 75% White fur

• 75 % Brown fur and 25% White fur

• 0% Brown fur and 100% White fur

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

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

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

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

What is a punnett square?

• graph used to predict the possible genotypes of offspring in a given cross
• a graph used to predict the possible birth rate of offspring.
• a graph used to predict the possible behavioral characteristics an offspring could have
• None of the above

Tags

NGSS.HS-LS3-3