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Mendelian Genetics Review

Total questions: 26

Worksheet time: 52mins

Name
Class
Date
1.
What is it called when a sperm and egg meet?
a)
meiosis
b)
fertilization
c)
cell division
d)
mitosis
2.

The physical expression of a trait such as brown eyes

a)

Dominant

b)

Recessive

c)

Phenotype

d)

Genotype

3.

Independent assortment causes _______ chromosomes to be randomly distributed in the final gametes

a)

homologous

b)

sister

c)

haploid

d)

allele

4.
The dominant trait in this punnett square is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
5.
When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs
a)
crossing over
b)
a mutation
c)
independent assortment
d)
fertilization
6.
How are your chromosomes inherited?
a)
most of your chromosomes from your mother
b)
most of your chromosomes from your father
c)
a random number of chromosomes from each parent
d)
half your chromosomes from your mother and half from your father.
7.

Chromosomes can line up in a variety of arrangements at the beginning of meiosis. Therefore, different combinations of chromosomes can be in different gametes. This source of genetic variation is called

a)

Crossing over

b)

Independent Assortment

c)

Mendel's First Law

d)

Random fertilization

8.
What kind of trait is the white color of the flower?
a)
heterozygous
b)
Recessive
c)
Dominant
d)
Phenotype
9.
If a person has a genotype of RR, what do you know about their gametes (sex cells)?
a)
They will all contain the R allele.
b)
They will all contain RR.
c)
Some will contain R, some will contain r.
d)
They will all contain the r allele.
10.

What predicted percentage of the offspring will be heterozygous?

a)

100%

b)

75%

c)

50%

d)

25%

11.
A yellow pea plant (YY) is being crossed with a Yellow pea plant (Yy). What would be the predicted phenotypes of the offspring?
a)
100 % rainbow 
b)
50% yellow and 50% green 
c)
100% yellow
d)
100% green
12.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
13.

the offspring produced with the genes in box six would have

a)

Recessive phenotypes for both traits

b)

Dominant phenotypes for both traits

c)

The dominant phenotype for the first trait and the recessive phenotype for the second

d)

The recessive phenotype for the first trait and the dominant phenotype for the second

14.
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds? (wrinkled gene = r  yellow gene = Y)
a)
9/16
b)
3/16
c)
1/16
d)
16/16
15.
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
16.

What goes in box 3

a)

Aabb

b)

AABB

c)

AAbb

d)

aaBb

17.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
18.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
19.

This image is an example of a _____________ cross.

a)

Monohybrid

b)

Dihybrid

c)

Purebred

d)

Pure Breeding

20.

Which of the following traits of a dog is inherited from its parents?

a)

the presence of fleas in its fur

b)

the color of its fur

c)

the ability to sit up and beg

d)

the habit of barking to go outside

21.

The following items are examples of __________.

Items: eye color, hair color, height

a)

homozygous alleles

b)

genotype

c)

heterozygous alleles

d)

phenotype

22.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
23.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
24.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
25.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
26.
Who is the father of genetics? 
a)
Charles Darwin 
b)
Gregor Mendel
c)
Dimitri Mendeleev 
d)
Hans Krebs