Punnett Square

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

What are the possible genotypes of the offspring? (A-Brown hair; a-blond hair)

• AA, Aa, aa

• AA only

• Aa only

• aa only

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the possibility of this offspring having the dominant trait?

• 50%

• 75%

• 25%

• 0%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What is the missing allele?

• a

• A

• AA

• aa

Tags

NGSS.HS-LS3-1

What genotype would go in box 1?

• BB

• Bb

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none

• 3/4

• 1/2

• all

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Heterozygous is when...

• the alleles are the same

• the alleles are different

• the alleles are absent

• the alleles are present

What are the possible genotypes for this cross? And what percentage of each is produced? (if this isn't familiar, re-watch this week's videos!)

• TT = 25% Tt= 50% tt=25%

• all tall

• TT= 75% tt = 25%

• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If A = red fur and a = white fur, what color fur would Aa be? (COMPLETE DOMINANCE)

• red

• white

• purple

• blue

Tags

NGSS.HS-LS3-1

A heterozygous tall pea plant (Tt) is crossed with a short pea plant (tt).

Perform a punnett square cross and determine the Genotype & %. (if this isn't familiar, re-watch this week's videos!)

• 100% Tt

• 50% Tt, 50% tt

• 75%Tt, 25%tt

• 25%TT, 50%Tt, 25%tt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2