Punnett Squares: A How-To Guide

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

In a punnet square where are the parent alleles written?

• Top and inside the boxes
• Only on the left and right side of the boxes. 
• outside of the boxes (top and left side)
• All on the top side of the boxes

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 yellow seed genotype?

• aa
• Aa
• AA
• AA or Aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What genotype would go in box 2?

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What genotype would go in box 3?

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What genotype would go in box 1?

• BB
• Bb
• bb

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This is an example of ___________?

• Incomplete dominance
• Co-Dominance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Why are there no white rabbit babies?

• The white gene is not present in any of the babies.
• It takes two recessive genes to show the trait.
• Grey is a better color.
• Baby five will be white.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2