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Dihybrid Cross

Authored by Lisa Thompson

Science

11th Grade

NGSS covered

Dihybrid Cross
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15 questions

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1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Cross Two Homozygous plants

(RRYY x rryy)

R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds

What is the probability for an offspring to have Round and Yellow seeds? [Answer in fraction]

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

In certain camels, one hump (H) is dominant over two humps (h) while long necks (N) are dominant over short necks (n). Cross a camel that is heterozygous for both traits with a camel that is homozygous recessive for hump & heterozygous for the neck.


What is the probability for an offspring to be homozygous recessive for both traits? [Answer in fraction]

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-2

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb? [Type the answer in fraction]

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-2

NGSS.HS-LS3-1

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A male alligator has the genotype RrAa. If this alligator mates with a female with genotype RrAa, what is the chance their offspring will have the genotype rrAa? [Type the answer in fraction]

Tags

NGSS.HS-LS3-3

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Cross Two Homozygous plants

(RrYy x rrYy)

R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds

What is the probability for an offspring to have Wrinkled and Green seeds? [Answer in fraction]

Tags

NGSS.HS-LS3-3

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a dihybrid cross involving two heterozygous parents (AaBb x AaBb), what is the phenotypic ratio of the F1 generation?

3:1

9:3:3:1

1:2:1

1:1:1:1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Cross Two Homozygous plants
(
RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 

0%

25%

50%

100%

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-2

NGSS.HS-LS3-1

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