Dihybrid Cross

T4 - Based off this Punnett Square, what fraction of the offspring will have wrinkled, yellow seeds?

• 9/16

• 3/16

• 1/16

• 16/16

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Assume mom's gametes are on the left, what is her genotype?

• TTZz

• TtZz

• ttZZ

• TtZZ

Tags

NGSS.HS-LS3-1

Assume dad's gametes are on top, what is his genotype?

• AAPP

• AaPp

• aaPP

• Aapp

Tags

NGSS.HS-LS3-1

If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?

• GB, Gb, gB, gb

• GB, GB, gb, gb

• Gb, Gb, Gb, GB

• GG, BB, gg, bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

T4 - Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3

T4 - What fraction of offspring from the cross AaBB x Aabb will be heterozygous for both traits (ex. AaBb) ?

• 1/16

• 1/4

• 1/2

• 3/16

Tags

NGSS.HS-LS3-3

Long tongues (T) are dominant to short tongues in green tree frogs.  What is the probability that two frogs that are heterozygous for long tongues could produce offspring with short tongues?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The genetic make up of this flower is ________.

• homozygous recessive

• heterozygous

• homozygous dominant

• white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In cacti, long arms (A) are dominant to short arms (a).  Suppose 2 heterozygous cacti are crossed.  What percentage of their offspring are expected to have short arms?

• 0%

• 25%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a dihybrid cross between two heterozygous individuals (AaBb x AaBb), what is the expected phenotypic ratio of the offspring?

• 9:3:3:1

• 3:1

• 1:1:1:1

• 1:2:1

Tags

NGSS.HS-LS3-3