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GENETICS EXAM REVIEW

Total questions: 70

Worksheet time: 40mins

Name
Class
Date
1.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
2.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
3.
An allele that is hidden when the dominant allele is present.
a)
Dominant Allele
b)
Gene
c)
Recessive Allele
d)
Probability
4.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
5.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
6.
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
7.
If B = brown hair and b = blonde hair, what is the probability of brown hair?
a)
25%
b)
50%
c)
0%
d)
75%
8.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
9.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
10.
A Punnet Square will 
a)
tell you exactly what your offspring will look like
b)
increase the chance you pass on recessive traits
c)
predict genotypes and phenotypes in offspring
d)
have no purpose but for Taylor to give us extra assignments
11.
Both parents in this Punnet square
a)
are homozygous dominant
b)
are homozygous recessive
c)
are heterozygous
d)
have blue eyes
12.
bb is a _________________ genotype
a)
Dominant
b)
Homozygous
c)
Genotype
d)
Phenotype
13.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
14.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
15.
Axial flowers is dominant to terminal. What is the probabilty of offspring being terminal?
a)
1/4
b)
2/4
c)
3/4
d)
4/4
16.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
17.
If B = brown hair and b = blonde hair, what is the probability of brown hair?
a)
25%
b)
50%
c)
0%
d)
75%
18.
In some animals, brown eyes (B) are dominant over blue eyes (b). Which of these genotypes will complete the Punnett Square to the right?
a)
B
b)
bb
c)
Bb
d)
BB
19.
What would go into punnet square 1
a)
BB
b)
Bb
c)
bb
d)
all choices
20.
What would go into punnet square 2
a)
BB
b)
Bb
c)
bb
d)
all choices
21.
What would go into punnet square 3
a)
BB
b)
Bb
c)
bb
d)
all choices
22.
What would go into punnet square 4
a)
BB
b)
Bb
c)
bb
d)
all choices
23.
Being tall or short are examples of _______________
a)
Dominant
b)
Homozygous
c)
Genotype
d)
Phenotype
24.
What percent of offspring will have the recessive trait?
a)
25
b)
50
c)
75
d)
100
25.
If a mom and dad both have brown eyes (heterozygous), what is the probability of their child having blue eyes? (B= brown eyes, b= blue eyes)
a)
50%
b)
0%
c)
25%
d)
100%
26.
What is the probability of homozygous dominant offspring?
a)
0%
b)
100%
c)
50%
d)
25%
27.
What is the probability of homozygous recessive offspring?
a)
0%
b)
100%
c)
50%
d)
25%
28.

a characteristic that an organism can pass on to its offspring through genes

a)

heredity

b)

DNA

c)

Trait

d)

Chromosome

29.

the passing of traits from parents to offspring

a)

trait

b)

heredity

c)

chromosome

d)

genes

30.

the genetic material that carries information about an organism and is passed from parent to offspring

a)

chromosome

b)

allele

c)

gene

d)

DNA

31.

a double rod of condensed chromatin in the nucleus that contains DNA

a)

allele

b)

chromosome

c)

gene

d)

DNA

32.

the set of information that controls a trait; a segment of DNA on a chromosome that codes for a specific trait

a)

allele

b)

gene

c)

dominant

d)

recessive

33.

The different forms of a gene

a)

DNA

b)

chromosome

c)

phenotype

d)

allele

34.

an organisms genetic makeup or allele combinations (ex. BB, Bb, or bb)

a)

dominant trait

b)

genotype

c)

recessive trait

d)

phenotype

35.

an organism's physical appearance or visible trait (ex. brown eyes, blue eyes)

a)

dominant trait

b)

genotype

c)

recessive trait

d)

phenotype

36.

a trait that is always expressed in the phenotype of an organism

a)

dominant trait

b)

genotype

c)

recessive trait

d)

phenotype

37.

a trait that is expressed only when two alleles are present

a)

dominant trait

b)

genotype

c)

recessive trait

d)

phenotype

38.

A tool to predict the probability of certain traits in offspring

a)

Calculator

b)

Punnett Cube

c)

Traits Indicator

d)

Punnett Square

39.

Mutation

a)

Being bit a radioactive spider

b)

Any change in a gene or chromosome

c)

Having an accident in the science lab

d)

None of these

40.

A person who has one recessive allele for a trait, but does not have the trait

a)

Bearer

b)

Transporter

c)

Carrier

d)

Courier

41.

A gene that is carried on the X or Y chromosome

a)

X or Y gene

b)

Sex-linked Gene

c)

Z gene

d)

Male or female gene

42.

Any trait that is controlled by many alleles

a)

Assorted alleles

b)

Manifold alleles

c)

Multiple alleles

d)

Motley alleles

43.

The offspring of two homozygous parents show an "in-between" phenotype

a)

Incomplete dominance

b)

Inadequate dominance

c)

Insufficient dominance

d)

Imperfect dominance

44.

A chart or "family tree" that tracks which members of a family have a particular trait

a)

Blueprint

b)

Pedigree

c)

Table

d)

Graph

45.

The process of selecting a few organisms with desired traits to serve as parents of the next generation

a)

Hybridizaton

b)

Cloning

c)

Selective Breeding

d)

Inbreeding

46.

Involves crossing two individuals that have similar characteristics

a)

Inbreeding

b)

Cloning

c)

Selective Breeding

d)

Hybridization

47.

Involves crossing two genetically different individuals

a)

Inbreeding

b)

Cloning

c)

Selective Breeding

d)

Hybridization

48.

Producing an organism that has the exact traits as the organism from which it was produced

a)

Hybridization

b)

Genetic Engineering

c)

Cloning

d)

Gene Therapy

49.

The transfer of a gene from the DNA of one organism into another organism in order to produce an organism with desired trait

a)

Genetic Engineering

b)

Cloning

c)

Hybridization

d)

Gene Therapy

50.

The insertion of working copies of a gene into the cells of a person with a genetic disorder

a)

Hybridization

b)

Genetic Engineering

c)

Cloning

d)

Gene Therapy

51.

All of the DNA in one cell of an organism

a)

Gnome

b)

Genome

c)

Genre

d)

Genie

52.

Who is the "father" of genetics?

a)

Bill Nye

b)

Albert Einstein

c)

Howie Mendel

d)

Gregor Mendel

53.

DNA consists of repeating series of a ____________.

a)

Riptide

b)

Nucleotide

c)

Noontide

d)

Springtide

54.

Which of the following is not part of a nucleotide?

a)

Sugar Group

b)

Phosphate Group

c)

Nitrogen Bases

d)

Nuclear Group

55.

Which of the following is not one of the nitrogen bases of a nucleotide

a)

Cyanide

b)

Adenine

c)

Thymine

d)

Guanine

56.

A base pair is substituted for another pair

a)

Addition mutation

b)

Substitution mutation

c)

Deletion mutation

57.

A base pair is added into the strand

a)

Addition mutation

b)

Substitution mutation

c)

Deletion mutation

58.

A base pair is removed from the strand

a)

Addition mutation

b)

Substitution mutation

c)

Deletion mutation

59.

In order to see a recessive trait in an organism’s phenotype, what must be the organism’s genotype?

a)

Homozygous Dominant

b)

Homozygous Recessive

c)

Heterozygous

60.

A plant with a dominant homozygous trait is crossed with a plant with a recessive homozygous version of that trait. What is the probability that the offspring will display the dominant trait in its phenotype?

a)

50%

b)

100%

c)

25%

d)

0%

61.

What is the genotype for females?

a)

XX

b)

XY

c)

YY

d)

Circles

62.

What is the genotype for males?

a)

XX

b)

XY

c)

ZZ

d)

ZY

63.

Sex chromosomes are located on which pair of chromosomes?

a)

1st

b)

47th

c)

10th

d)

23rd

64.

Freckles=recessive. Cross a heterozygous parent with NO freckles with a parent with freckles. What is the probability that the offspring will NOT have freckles?

a)

75%

b)

100%

c)

50%

d)

0%

65.

In dogs, long tails are dominant over short tails. Cross a heterozygous tailed dog with a homozygous recessive dog. What is the probability that the dog will have a short tail?

a)

75%

b)

50%

c)

100%

d)

25%

66.

In a pedigree, what symbols represent females?

a)

Squares

b)

Circles

c)

Hexagons

d)

Triangles

67.

In a pedigree, what symbols represent males?

a)

Squares

b)

Triangles

c)

Circles

d)

Octagons

68.

In a pedigree, shaded in symbols mean what?

a)

The person has a shady history.

b)

The person is a carrier

c)

The person is sensitive to sunlight

d)

The person shows/has the particular trait

69.

In a pedigree, symbols that are NOT shaded in mean what?

a)

The person does not show the trait and is not a carrier

b)

The person shows/has the trait

c)

The person's history is a blank slate

d)

The person is a carrier

70.

In a pedigree, half shaded in symbols mean what?

a)

The person does not show the trait, and they are not a carrier

b)

The person has the trait

c)

The person has two different colored eyes

d)

The person does not show the trait, but they are a carrier

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