Free Printable Term 1 Week 6 Homework Task

1.

A gene pool consists of

a)

all of the genes, including all the different alleles, that are present in a population

b)

some of the genes, including the different alleles, that are present in a population

c)

all of the genes that are present in all populations

d)

all of the genes, including all the different alleles, that are present in all populations

2.

The number of times a particular allele appears in a gene pool is known as the

a)

population of the allele

b)

relative percentage of the allele

c)

frequency of the allele

d)

evolution of the allele

3.

Evolution can be defined as a ____________

a)

change in the frequency of an allele in a population over time

b)

change in the frequency of reproduction in a population

c)

change in the frequency of an allele in an individual

4.

What do we a call an anatomical, physiological, or behavioral change that improves a populations ability to survive?

a)

Adaptation

b)

Coherent Change

c)

Selective Breeding

d)

Adamant Change

5.

Genetic drift is change in the allele frequency of a population due to...

a)

random chance

b)

natural selection

c)

non-random mating (sexual selection)

d)

artificial selection

6.

This mechanism of evolution occurs when populations migrate.

a)

Extinction

b)

Gene flow

c)

Genetic drift

d)

Natural Selection

7.

What is the name of the process in which the most favorable traits are passed onto the next generation?

a)

Genetic drift

b)

Gene pool

c)

Gene flow

d)

Natural selection

8.

A trait associated with a gene that is carried only by the male or female parent is called a _____________________ trait.

a)

sex linked

b)

multiple alleles

c)

codominance

d)

incomplete dominance

9.

In fruit flies, gender is inherited in the same way as it is in humans. Eye color is a trait located on the X chromosome. There is no gene for eye color on the Y chromosome. The allele for red eye color (1) is dominant to the allele for white eye color (2).

Which of the diagrams represents a white eyed female?

a)

A

b)

B

c)

C

d)

D

e)

E

10.

In fruit flies, gender is inherited in the same way as it is in humans. Eye color is a trait located on the X chromosome. There is no gene for eye color on the Y chromosome. The allele for red eye color (1) is dominant to the allele for white eye color (2).

If all male offspring born from a cross have white eyes and all females have red eyes, the parents are most likely:

a)

A & E

b)

A & B

c)

A & C

d)

B & E

e)

B & D

11.

In fruit flies, gender is inherited in the same way as it is in humans. Eye color is a trait located on the X chromosome. There is no gene for eye color on the Y chromosome. The allele for red eye color (1) is dominant to the allele for white eye color (2).

If a homozygous red eyed female and a white eyed male mate, the percentage of the offspring with white eyes will be:

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

12.

Who could possibly be the parents of baby 1?

a)

Parent I

b)

Parent II

c)

Parent II and Parent III

d)

Parent III

e)

Parent I and Parent III

13.

Who could possibly be the parents of baby 3?

a)

Parent I

b)

Parent II

c)

Parent II and Parent III

d)

Parent III

e)

Parent I and Parent II

14.

Blood types show what pattern of inheritance. Choose all that apply.

a)

codominance

b)

incomplete dominance

c)

sex linked traits

d)

multiple alleles

15.

Analyze the pedigree to determine the pattern of inheritance for this pedigree as simple recessive, simple dominant, sex linked recessive, or sex linked dominant.

a)

sex linked recessive

b)

sex linked dominant

c)

simple dominance

d)

simple recessive

16.

What is the genotype of individual “1” in generation I using 1=dominant and 2 = recessive.

a)

X¹X¹

b)

X²X²

c)

X¹X²

d)

X¹Y

e)

X²Y

17.

What is the genotype of individual “5” in generation III using 1=dominant and 2 = recessive.

a)

X¹X¹

b)

X²X²

c)

X¹X²

d)

X¹Y

e)

X²Y

18.

What is the genotype of individual “8” in generation III using 1=dominant and 2 = recessive.

a)

1,1

b)

2,2

c)

1,2

19.

____________________ is a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele and this results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.

a)

codominance

b)

incomplete dominance

c)

hetrozygous

d)

homozygous

e)

sex linked

20.

In a certain cattle there are red haired cattle, white haired cattle, and roan cattle that have red and white hairs. What would be the possible percentage of roan cattle in a cross between a white cow and a roan bull?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

Term 1 Week 6 Homework Task

Total questions: 20

Worksheet time: 35mins

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