Dihybrid

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

• TTZz

• TtZz

• ttZZ

• TtZZ

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• AAPP

• AaPp

• aaPP

• Aapp

Tags

NGSS.HS-LS3-1

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-LS3-3

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

Yellow body color (Y) is dominant to blue body color (y); Squarepants (S) is dominant to roundpants (s).

They wonder what the chances are of their traits being passed to their offspring. YySs x yyss

Which of the following correctly describes the phenotypic ratios for their traits?

• yellow body w/ squarepants: 2/16

  yellow body w/ roundpants: 1/16

  blue body w/ squarepants: 8/16

  blue body w/ roundpants: 5/16

• yellow body w/ squarepants: 8/16

  yellow body w/ roundpants: 0

  blue body w/ squarepants: 8/16

  blue body w/ roundpants: 0

• yellow body w/ squarepants: 4/16

  yellow body w/ roundpants: 4/16

  blue body w/ squarepants: 4/16

  blue body w/ roundpants: 4/16

• yellow body w/ squarepants: 0

  yellow body w/ roundpants: 8/16

  blue body w/ squarepants: 8/16

  blue body w/ roundpants: 0

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Pink body color (P) is dominant to orange body color (p); Thick eyebrows (T) is dominant to thin eyebrows (t).

They wonder what the chances are of their traits being passed to their offspring. PpTT x pptt

Which of the following correctly describes the phenotypic ratios for their traits?

• pink body w/ thick eyebrows: 9/16

  pink body w/ thin eyebrows: 3/16

  orange body w/ thick eyebrows: 3/16

  orange body w/ thin eyebrows: 1/16

• pink body w/ thick eyebrows: 4/16

  pink body w/ thin eyebrows: 4/16

  orange body w/ thick eyebrows: 4/16

  orange body w/ thin eyebrows: 4/16

• pink body w/ thick eyebrows: 8/16

  pink body w/ thin eyebrows: 0

  orange body w/ thick eyebrows: 8/16

  orange body w/ thin eyebrows: 0

• pink body w/ thick eyebrows: 0

  pink body w/ thin eyebrows: 8/16

  orange body w/ thick eyebrows: 0

  orange body w/ thin eyebrows: 8/16

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Squarepants (S) is dominant to roundpants (s); Long nose (L) is dominant to a stubby nose (l). They wonder what the chances are of their traits being passed to their offspring. ssll x SSLl Which of the following correctly describes the phenotypic ratios for their traits?

• squarepants w/ long nose: 8/16

  squarepants w/ stubby nose: 0

  roundpants w/ long nose: 8/16

  roundpants w/ stubby nose: 0

• squarepants w/ long nose: 0

  squarepants w/ stubby nose: 8/16

  roundpants w/ long nose: 0

  roundpants w/ stubby nose: 8/16

• squarepants w/ long nose: 8/16

  squarepants w/ stubby nose: 8/16

  roundpants w/ long nose: 0

  roundpants w/ stubby nose: 0

• squarepants w/ long nose: 0

  squarepants w/ stubby nose: 0

  roundpants w/ long nose: 8/16

  roundpants w/ stubby nose: 816

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Yellow body color (Y) is dominant to blue body color (y); Squarepants (S) is dominant to roundpants (s).

Spongebob is heterozygous for his yellow body color and his squarepants, while his wife Spongesusie is blue and has roundpants.

Which of the following is Spongebob's genotype?

• YySs

• YySS

• Yyss

• yySs

Tags

NGSS.HS-LS3-1

Yellow body color (Y) is dominant to blue body color (y); Squarepants (S) is dominant to roundpants (s).

Spongebob is heterozygous for his yellow body color and his squarepants, while his wife Spongesusie is blue and has roundpants.

Which of the following is Spongesusie's genotype?

• YySs

• yySS

• yyss

• yySs

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2