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5.3 Exit Ticket

Last updated almost 4 years ago

10 questions

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Question 1

1.

In fruit flies red eyes (R) are dominant to white eyes (r). Perform a cross between a white eyed female and a homozygous red eyed male.

Question 2

2.

For the above cross, the genotypes of the offspring would be?

RR 100%

RR 75%

RR 50 %

RR 25%

RR 0%

Rr 100%

Rr75%

Rr 50%

Rr25%

Rr 0%

rr 100%

rr 75%

rr 50%

rr 25%

rr 0%

Question 3

3.

For the above cross, the Phenotype of the offspring would be?

Red Eyed 100%

Red Eyed 75%

Red Eyed 50%

Red Eyed 25%

Red Eyed 0%

White Eyed 100%

White Eyed 75%

White Eyed 50%

White Eyed 25%

White Eyed 0%

Question 4

4.

You take two of the previous offspring of the above cross and cross them. Create the punnett square for the cross below.

Question 5

5.

For the above cross, the genotypes of the offspring would be?

RR 100%

RR 75%

RR 50 %

RR 25%

RR 0%

Rr 100%

Rr75%

Rr 50%

Rr25%

Rr 0%

rr 100%

rr 75%

rr 50%

rr 25%

rr 0%

Question 6

6.

For the above cross, the Phenotype of the offspring would be?

Red Eyed 100%

Red Eyed 75%

Red Eyed 50%

Red Eyed 25%

Red Eyed 0%

White Eyed 100%

White Eyed 75%

White Eyed 50%

White Eyed 25%

White Eyed 0%

Question 7

7.

Two heterozygous red eyed flies are crossed and they have 625 children. How many would you expect to be Red eyed and white eyed? Explain.

Question 8

8.

Two fruitfly genes are unlinked. The probability of the two genes are below:

Eye color
RR-25% (Red)
Rr-50% (Red)
rr-25% (White)

Wing span
BB-0% (Big)
Bb-100% (Big)
bb-0% (Small)

What is the probability that that fruit fly has red eyes OR a small wingspan?

Question 9

9.

Two fruitfly genes are unlinked. The probability of the two genes are below:

Eye color
RR-25% (Red)
Rr-50% (Red)
rr-25% (White)

Wing span
BB-0% (Big)
Bb-100% (Big)
bb-0% (Small)

What is the probability that that fruit fly has red eyes AND a small wingspan?

Question 10

10.

Two fruitfly genes are unlinked. The probability of the two genes are below:

Eye color
RR-25% (Red)
Rr-50% (Red)
rr-25% (White)

Wing span
BB-0% (Big)
Bb-100% (Big)
bb-0% (Small)

What is the probability that that fruit fly has white eyes AND a large wingspan?