Punnett Squares and More

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

Tags

NGSS.HS-LS3-2

Homozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

Tags

NGSS.HS-LS3-2

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 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-LS3-3

In the punnett square shown, what is the genotypes of the two parents?

• RW and RR
• RW and WW
• RR and WW
• RW and RR

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• Aa
• black hair
• heterozygous genes
• mutated DNA

Tags

NGSS.HS-LS4-3

Dominant or recessive?
tt

• Dominant 
• Recessive

What is a dominant allele?

• A trait that is always shown (capital letter)
• A trait that can be hidden (lower case letter)
• Alleles that are the same
• Alleles that are different

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Tags

NGSS.HS-LS3-1

What are the possible genotypes for this cross?

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

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3