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G8 LT2

Total questions: 11

Worksheet time: 8mins

Name
Class
Date
1.

Two true breeding flowers (red and white) have offspring that are all pink. What pattern of inheritance is this?

a)

codominance

b)

incomplete dominance

c)

complete dominance

d)

sex-linked inheritance

2.

Male sex chromosomes are...

a)

XX

b)

XXY

c)

XY

d)

XYZ

3.

Female sex chromosomes are...

a)

XY

b)

XYZ

c)

XXX

d)

XX

4.

What gamete possibilities could come from this parent's genotype?

a)

AB, AB, aB, aB

b)

Ab, Ab, Ab, Ab

c)

Ab, AB, Ab, ab

d)

AB, aB, ab, aB

5.

What goes in box 3?

a)

Aabb

b)

AABB

c)

ABAb

d)

aabb

6.

This image is an example of a _____________ cross.

a)

dihybrid

b)

monohybrid

c)

sex-linked

d)

purebred

7.

What percentage of the offspring will have this recessive disease?

a)

12%

b)

25%

c)

50%

d)

75%

8.

What percentage of the female offspring will be a carrier for this recessive disease?

a)

10%

b)

50%

c)

75%

d)

100%

9.

If a gene is found on an X chromosome, it is said to be what?

a)

recessive

b)

heterozygous

c)

dihybrid

d)

sex-linked

10.

A plant shows incomplete dominance in size. A tall plant (TT) is crossed with a medium plant (TS). What fraction of plants will also be tall?

a)

100%

b)

75%

c)

50%

d)

25%

11.

Color is a codominant trait in frogs. If a pure blue frog crosses with a pure green frog, what percentage of the offspring will be blue and green striped?

a)

100%

b)

75%

c)

3.14159

d)

50%