WorksheetsGenetics Test
Total questions: 33
Worksheet time: 8hrs 15mins
Name
Class
Date
1.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
2.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
3.
What does the prefix homo- in homozygous mean?
a)
same
b)
different
c)
dating
d)
humans
4.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
5.
Which of the following is heterozygous
a)
Ww
b)
ii
c)
DD
d)
kk
6.
The physical appearance of a trait is known as the-
a)
genotype
b)
phenotype
c)
characteristics
d)
intelligence
7.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?
a)
Brown Hair
b)
Blonde Hair
c)
Brown and Blonde Hair
d)
Black Hair
8.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?
a)
BB
b)
bb
c)
Bb
d)
bB
9.
Mary is heterozygous. If F for freckles, and f is for no freckles, what is Mary's phenotype?
a)
Freckles
b)
No Freckles
c)
A few Freckles
d)
One Freckle
10.
rr
a)
Homozygous Dominant
b)
Homozygous Recessive
c)
Heterozygous
d)
Heterozygous Recessive
11.
Select all combinations that will create a dominant trait?
a)
Aa
b)
aa
c)
AA
d)
Pp
e)
bb
12.
The science of heredity
a)
heredity
b)
genetics
c)
trait
d)
gene
13.
The passing of traits from parents to offspring
a)
heredity
b)
genetics
c)
trait
d)
alleles
14.
Characteristics can also be called
a)
heredity
b)
traits
c)
gene
d)
alleles
15.
The different forms of a gene
a)
heredity
b)
genetics
c)
gene
d)
alleles
16.
This trait always shows up in an organism when the allele is present
a)
dominant allele
b)
codominance
c)
probability
d)
recessive allele
17.
This trait is hidden whenever the dominant allele is present
a)
dominant allele
b)
codominance
c)
recessive allele
d)
Punnett Square
18.
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
19.
An organism that has two different alleles for a trait (hybrid)
a)
fertilization
b)
genotype
c)
homozygous
d)
heterozygous
20.
An organism that has two identical alleles for a trait (purebred)
a)
genotype
b)
phenotype
c)
homozygous
d)
heterozygous
21.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
22.
B = brown fur b = white fur
In the Punnett square, what is the probability for white fur?
In the Punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
23.
In the Punnett square shown, what must the genotype of the missing parent be?
a)
BB
b)
Bb
c)
bb
d)
Tt
24.
What are the possible genotypes for this cross?
(Click the picture to see it without the text)
(Click the picture to see it without the text)
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
25.
B = brown fur b = white fur
In the Punnett square, what is the probability for white fur?
In the Punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
26.
What is the yellow seed genotype?
a)
aa
b)
Aa
c)
AA
d)
AA or Aa
27.
True or False: Sex Chromosomes carry genes that determine the skin color and hair color of a child.
a)
True
b)
False
28.
Blue eyes are considered to be ______________________ compared to brown eyes
a)
Dominant
b)
Recessive
c)
Homozygous
d)
Heterozygous
29.
Each parent provides what percentage of your traits?
a)
25%
b)
50%
c)
75%
d)
100%
30.
How many autosomal chromosomes does a human have?
a)
46
b)
22 Pair
c)
23 pair
d)
2
31.
Which sex chromosome are most sex linked traits found on?
a)
X
b)
Y
c)
W
d)
B
32.
Genes are inherited from both parents through
a)
Asexual Reproduction
b)
Sexual Reproduction
33.
Who is the father of Genetics?
a)
Zacharias Janssen
b)
Antoine Leeuwenhoek
c)
Gregor Mendel
d)
Theodor Schwann
100 %
