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Genetics

Total questions: 35

Worksheet time: 41mins

Name
Class
Date
1.
What is a phenotype?
a)
The expression of a trait; what you see.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
2.

The inherited combination (gene code) of alleles is known as the offspring's

a)
heredity
b)
phenotype
c)
genotype
d)
redigree
3.
Sex cells are produced through the process of
a)
mitosis
b)
cytokinesis
c)
binary fission
d)
meiosis
4.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
5.

During meiosis, one parent cell gives rise to how many daughter cells?

a)

1

b)

2

c)

3

d)

4

6.

What is the study of genes and inheritance known as?

a)

Genetics

b)

Chemistry

c)

Physics

d)

Astronomy

7.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
8.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
9.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
10.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
11.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
12.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
13.

The genes in your body carry information about

a)

how many state capitals you know.

b)

the color you choose to dye your hair.

c)

the size of your feet.

d)

how to play your favorite board game.

14.

A person who is homozygous for a trait can have a genotype of....

a)

AA, Aa

b)

Aa, aa

c)

AA, aa

d)

aa

15.

What is the missing pairing?

a)

AA

b)

Aa

c)

aa

16.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
17.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
18.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
19.

What are the phenotype percentages of the offspring?

(A-Brown fur color; a-white fur color)

a)

50 % Brown fur and 50% White fur

b)

25 % Brown fur and 75% White fur

c)

75 % Brown fur and 25% White fur

d)

0% Brown fur and 100% White fur

20.

Genotype is

a)

stem height

b)

feather color

c)

physical appearance

d)

genetic makeup

21.

The term that relates to physical characteristics that are studied in genetics.

a)

traits

b)

offspring

c)

generations

d)

hybrids

22.

Factors that control traits are

a)

purebreds

b)

genes

c)

recessives

d)

parents

23.
What is one advantage of sexual reproduction?
a)
offspring are identical to parents
b)
offspring are resistant to viruses
c)

rapid reproduction and many offspring in short time

d)
offspring inherit a wider variety of genetic information
24.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
25.

What is the probability that the offspring will have blue eyes?

a)

25%

b)

50%

c)

75%

d)

100%

26.

Round seeds are dominant (R). Wrinkled seeds are recessive (r). What is the likelihood that this offspring is round (R)?

a)

0%

b)

25%

c)

50%

d)

75%

27.

Fill in the Yellow Box

a)

AA

b)

Aa

c)

aa

28.

Fill in the Yellow Box

a)

Bb

b)

BB

c)

bb

29.

According to this Punnett square, what is the probability the offspring will have a homozygous dominant genotype?

a)

25%

b)

50%

c)

75%

d)

100%

30.

The punnett square is used to tell the color of a frogs skin. "G" means green skin and "g" means brown skin. What is the chance the baby frogs will have brown skin?

a)

0%

b)

25%

c)

50%

d)

100%

31.

What is the correct order from SMALLEST to LARGEST?

a)

gene, DNA, chromosome, nucleus, cell

b)

cell, nucleus, chromosome, DNA, gene

c)

gene, chromosome, DNA, nucleus, cell

d)

gene, DNA, nucleus, chromosome, cell

32.

green eyes, brown eyes, or blue eyes

a)

Trait

b)

Characteristic

33.

Length of bird wings

a)

Trait

b)

Characteristic

34.

Who is known as "Father of Genetics"?

a)

Isaac Newton

b)

Charles Darwin

c)

Gregor Mendel

d)

Neil deGrasse Tyson

35.

What is the difference between a dominant and recessive trait?

a)

Dominant traits are stronger and change the recessive trait genotype

b)

Dominant Traits are seen more often and alleles capitalized

c)

Dominant Traits are more powerful and alleles lower case

d)

Dominant Traits are always heterozygous

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