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Unit 7 Test Review

Total questions: 40

Worksheet time: 34mins

Name
Class
Date
1.
The different forms of a gene
a)
heredity
b)
genetics
c)
gene
d)
alleles
2.
This trait always shows up in an organism when the allele is present
a)
dominant allele
b)
codominance
c)
probability
d)
recessive allele
3.
This trait is hidden whenever the dominant allele is present
a)
dominant allele
b)
codominance
c)
recessive allele
d)
Punnett Square
4.
A chart that shows all the possible combinations of alleles that can result from a genetic cross
a)
dominant allele
b)
codominance
c)
probability
d)
Punnett Square
5.
An organism's physical appearance or visible traits
a)
fertilization
b)
genotype
c)
phenotype
d)
homozygous
6.
An organism's genetic makeup, or allele combination
a)
fertilization
b)
genotype
c)
phenotype
d)
heterozygous
7.
An organism that has two different alleles for a trait (hybrid)
a)
fertilization
b)
genotype
c)
homozygous
d)
heterozygous
8.
An organism that has two identical alleles for a trait (purebred)
a)
genotype
b)
phenotype
c)
homozygous
d)
heterozygous
9.

In peas, yellow pod color is dominant to green pod color. Two heterozygous parents are crossed. What are the chances that the offspring will have green pods?

a)

25%

b)

50%

c)

75%

d)

100%

10.

In a dihybrid cross, how many boxes does the punnet square need to have?

a)

2

b)

4

c)

8

d)

16

11.

How many chromosomes do humans have?

a)

22

b)

42

c)

23

d)

46

12.

A _______________ is any sex cell. (egg or sperm)

a)

zygote

b)

gamete

c)

chromosome

d)

gene

13.

What type of Genotype is this: AA?

a)

Homozygous

b)

Heterozygous

14.

What type of Genotype is this: Aa?

a)

Homozygous

b)

Heterozygous

15.

What type of Genotype is this: aa?

a)

Homozygous

b)

Heterozygous

16.
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
17.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
18.
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
19.
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?
a)
3/16
b)
4/16
c)
8/16
d)
12/16
20.

This image is an example of a _____________ cross.

a)

Monohybrid

b)

Dihybrid

c)

Purebred

d)

Pure Breeding

21.

Genes are ...

a)

That is hidden whenever the dominant allele is present

b)

Segment of DNA on chromosome that control a trait or characteristic

c)

A number of how an event occur

d)

An organism that has two different alleles for a trait

22.

It is possible for parents to have offspring that express a trait that neither parent appears to express.

a)

True

b)

False

23.

A 2n cell of a bat has 44 chromosomes, how many chromosomes will you find in one of his gametes

a)

23

b)

22

c)

44

d)

88

24.
A dog has 78 chromosomes in its body cells.  What is the diploid number?
a)
78
b)
39
c)
1
d)
100
25.

Choose the 3 terms that are related to Meiosis.

a)

Haploid

b)

Diploid

c)

somatic

d)

sexual reproduction

e)

4 daughter cells

26.

Choose the 3 terms that are related to mitosis

a)

Punnett square

b)

sexual reproduction

c)

somatic

d)

2 daughter cells

e)

diploid

27.

What are the proper complementary base-pairs?

a)

A--T and G--C

b)

A--G and C--T

c)

G--T and A--C

d)

A--C and T--G

28.

T A G G A C T


The complementary strand is...

a)

T A G G A C T

b)

A T G G T G A

c)

A T C C T G A

d)

T T C C A G T

29.

Name this structure

a)

double helix

b)

nucelotide

c)

twisted ladder

d)

hydrogen bond

30.

What type of sugar molecule does DNA use?

a)

Ribose

b)

Deoxyribose

31.
If we think of DNA as a ladder, which parts are the sides of the ladder?
a)
the nitrogenous base pairs
b)
the phosphate-sugar backbone
c)
the genes
d)
the phospholipid bilayer
32.
If we think of DNA as a ladder, which parts are the steps of the ladder?
a)
the nitrogenous base pairs
b)
the phosphate-sugar backbone
c)
the genes
d)
the phospholipid bilayer
33.

List the functions of each biomolecule

1. Carbohydrate​

2. Protein

3. Lipid

4. Nucleic Acid

a)

1. quick energy

2. speed up chemical reactions/ provide structure

3. long term energy

4. store genetic info

b)

1. long term energy

2. quick energy

3. store genetic info

4. speed up chemical reactions/ provide structure

c)

1. quick energy

2. store genetic info 3. long term energy

4. speed up chemical reactions/ provide structure

d)

1. long term energy

2. speed up chemical reactions/ provide structure

3. quick energy

4. store genetic info

34.
What is the symbol for an Affected Male? 
a)
Half Circle 
b)
Half Square 
c)
Full Shaded Circle 
d)
Full Shaded Square 
35.
How many affected females are present? 
a)
1
b)
2
c)
3
d)
4
36.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
37.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?

a)

Aa

b)

AA

c)

aa

d)

A?

38.

Huntington's Disease is a dominant trait.

What is the correct genotype for individual I-2?

a)

HH

b)

Hh

c)

hh

d)

H?

39.

Differences in the nucleotide sequences of genes lead to:

a)

uneven base pairs.

b)

dihybrid cross sequences

c)

a variety of traits

d)

nucleotide variance

40.

Organisms may be different in the traits they express but they share the same:

a)

disorders

b)

DNA components

c)

DNA

d)

environmental factors

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