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College Biology Genetics Test

Total questions: 69

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
2.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
3.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
4.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
5.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
6.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
7.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
8.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
9.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
10.
Snapdragon flowers come in red, pink and white.  What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Polygenic Inheritance
11.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
12.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
13.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
14.
 Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
15.
 Recessive alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
16.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
17.
Where, in the eukaryotic cell, is DNA located?
a)
ribosomes
b)
nucleus
c)
E.R.
d)
cytoplasm
18.
Term for an organism that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
19.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
20.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
21.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
22.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
23.
If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?
a)
100% Tt
b)
50% Tt, 50% tt
c)
75%Tt, 25%tt
d)
25%TT, 50%Tt, 25%tt
24.

A gene is

a)

a section of DNA

b)

a chemical found in the nucleus of cells

c)

contains instructions for building a protein

d)

all of the above

25.

Human gametes contain how many chromosomes?

a)

46

b)

23

c)

12

d)

28

26.

If Mom is type A, and Dad is type AB, can their kid be type o?

a)

Yes

b)

No

27.

What is AA

a)

Homozygous Dominant

b)

Heterozygous

c)

Homozygous Recessive

d)

Heterozygous dominant

28.

What is Aa

a)

Homozygous Dominant

b)

Heterozygous

c)

Homozygous Recessive

d)

Heterozygous dominant

29.

What is aa

a)

Homozygous Dominant

b)

Heterozygous

c)

Homozygous Recessive

d)

Heterozygous dominant

30.

The physical look or the organism, such as brown eyes

a)

genotype

b)

phenotype

c)

Dominant

d)

Recessive

31.

When red snapdragons are crossed with white snapdragons, the offspring produce pink flowers. This is an example of:

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

32.

When red cows are crossed with white cow, the offspring have a mix of red hair and white hair. These cows are called roan. This is an example of:

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

33.

This flower is produced by crossing a pink-flowering plant and a white-flowering plant. This is an example of:

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

34.

If a dark brown horse and a white horse are bred, the offspring are palomino (tan). This is an example of:

a)

complete dominance

b)

incomplete dominance

c)

codominance

d)

polygenic inheritance

e)

multiple alleles

35.

In guinea pigs, black fur color is dominant to brown. What is the expected ratio of offspring if 2 heterozygous guinea pigs were mated?

a)

1BB: 2Bb: 1bb

b)

0BB: 2Bb: 2bb

c)

1BB: 1Bb: 2bb

d)

2BB: 2Bb: 0bb

36.
Which of the following statements is true regarding blood types?
a)
A and O are codominant, B is recessive.
b)
B and O are codominant, A is recessive.
c)
A and B are codominant, O is recessive.
d)
A , B and O are all codominant with each other.
37.

Which of the following statement is correct regarding Codominance?

a)

Both alleles are expressed equally

b)

Neither allele is expressed

c)

Expression of a trait depends upon the environment

38.
Which of the following statements is true regarding blood types?
a)
A and O are codominant, B is recessive.
b)
B and O are codominant, A is recessive.
c)
A and B are codominant, O is recessive.
d)
A , B and O are all codominant with each other.
39.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
40.
Give the genotype for person III-3
a)
GG
b)
Gg
c)
gg
41.
Give the genotype for person II-1
a)
GG
b)
Gg
c)
gg
42.
 How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
43.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
44.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
45.
If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?
a)
GB, Gb, gB, gb
b)
GB, GB, gb, gb
c)
Gb, Gb, Gb, GB
d)
GG, BB, gg, bb
46.
T4 - Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?
a)
0%
b)
25%
c)
50%
d)
100%
47.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
48.
What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
a)
Ry
b)
RRyy
c)
RrYy
d)
Rryy
49.
In a dihybrid cross
a)
one trait is crossed.
b)
two traits are crossed.
c)
four boxes are needed for the punnett square.
d)
mom's alleles are dominant.
50.

What is the genotype for a pea plant homozygous for round seeds (R), and heterozygous for yellow seeds?

a)

RrYy

b)

RRyy

c)

RRYy

d)

rryy

51.

A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be

a)

BBEE x bbee

b)

BBEe x BbEe

c)

BbEE x BbEe

d)

BBee x BBEE

52.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
53.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
54.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
55.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
56.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
57.

By looking at the chromosomes how can you tell that this person is biologically female?

a)

Because there are two X chromosomes

b)

Because there are more chromosomes than in a male

58.

By looking at the chromosomes is this individual biologically male or female? How do you know?

a)

Female, because they have two X chromosomes

b)

Male, because they have one X and one Y chromosome

59.

What is the mutation in this persons chromosomes?

a)

There is only one X

b)

7 is shaped like a hockey stick

c)

There's an extra 21

d)

1 is too curved

60.

This is called Turners syndrome, can you notice the mutation in the chromosomes?

a)

Both chromosomes 1 are bent

b)

There are too many chromosomes

c)

There are too many of chromosome 3

d)

There is no Y chromosome

61.

These are the chromosomes of someone with Kleinfelters syndrome. What is different about their chromosomes?

a)

There is only one Y chromosome

b)

One of the 5th chromosomes is too curved

c)

There is an extra X chromosome

d)

There are too few chromosomes

62.

Based on the karyotype, can you guess the name of this genetic disorder?

a)

Curvy 3

b)

Jacob's syndrome

c)

Triple X

d)

Superwoman syndrome

63.

This is known as Edwards Syndrome, can you identify the chromosomal mutation?

a)

Chromosomes 1 and 2 are bent

b)

There is no Y chromosome

c)

This persons chromosomes are normal

d)

There are 3 of chromosomes 18

64.

Which Genetic syndrome can we observe in this karyotype?

a)

Turner

b)

Klinefelter's

c)

Down

d)

Edward's

65.

Which Genetic syndrome can we observe in this karyotype?

a)

Turner

b)

Edward's

c)

Pateau

d)

Klinefelter's

66.
The karyotype shows an individual with Edward's Syndrome.  What is the name of the specific disorder?
a)
monomy
b)
trisomy
c)
deletion
d)
translocation
67.
What is an autosome?
a)
automobile built for one person
b)
chromosome that does not determine gender
c)
chromosome that does determine gender
d)
a plant because they do photosynthesis
68.

Colorblindness is more common in males than females because the allele is

a)

recessive and located on the X chromosome

b)

recessive and located on the Y chromosome

c)

dominant and located on the X chromosome

d)

dominant and located on the Y chromosome

69.

_______ are chromosomes that are not sex chromosomes and there are 44

a)

Sex Chromosome

b)

Autosomes

c)

X-Linked Genes

d)

Human Genome

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