Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Quiz: Genetics

Total questions: 25

Worksheet time: 2hrs 5mins

Name
Class
Date
1.

The genotypic percentage resulting from this this cross would be _____________________.

a)
25% blue eye 75 % brown eye 
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
2.
If a plant with the genotype PP is crossed with a plant with the genotype pp, what are the possible genotypes of the offspring?
a)
PP, pp, pp, PP
b)
Pp, Pp, Pp, Pp
c)
Pp, PP, pp, PP
d)
PP, Pp, pP, pp
3.
If most human offspring receive 23 chromosomes from the mother, how many chromosomes do they receive from the father?
a)
20
b)
78
c)
46
d)
23
4.

One cat is heterozygous, long hair (Rr), and it mate carries homozygous short hair (rr). What is the probability of the offspring having short hair?

a)

50%

b)

25%

c)

75%

d)

100%

5.

What is the genotype of the missing parent?

a)

BB

b)

Bb

c)

bb

6.

The characteristics that make one individual different from another such as eye color and hair color.

a)

traits

b)

personality

c)

genealogy

d)

fraternal twin

7.
Which term correctly describes an individual with a pair of the same alleles for a trait? 
a)
homologous
b)
heterozygous
c)
homozygous
d)
heterologus
8.
 When the genotype consists of a dominant and a recessive allele, the phenotype will be like the ______________ allele.
a)
dominant
b)
recessive
c)
both
d)
neither
9.

The prefixes "hetero." means ________ and "homo." means ________.

a)

different, same

b)

same, different

10.

A trait controlled by a recessive allele only appears in the organism's phenotype __________

a)

if the organism is a hybrid.

b)

if the organism does not have any dominant alleles.

c)

if the organism is a purebred.

11.

Who was the Austrian monk that experimented on pea plants and is called the "father of genetics"?

a)

Gregor Mendel

b)

Charles Darwin

c)

Francis Crick

d)

James Watson

12.

For starfish like Patrick, a pink body is recessive to a yellow body. Select all genotype(s) that would result in a starfish having a PINK body.

a)

pp

b)

Pp

c)

pP

d)

PP

13.

Both Patrick met Patti are heterozygous for their pink body color, which is dominant over a yellow body color. What are the chances of a child with a yellow body?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

14.

Everyone in Squidward’s family is homozygous for light blue skin, which is the dominant trait for body color. He married a girl who has light green skin, which is a recessive trait. Choose ALL the possible genotypes of their children

a)

BB

b)

Bb

c)

bb

d)

light blue

e)

light green

15.
In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?
a)
It is BB.
b)
It is Bb
c)
It is brown
d)
It is bb.
16.
In this punnett square, which is the dominant trait?
The B stands for bud.
a)
purple flower bud
b)
white flower bud
c)
dominant
d)
recessive
17.
Unattached earlobes (E) is dominant. Attached earlobes (e) is recessive. A woman with the genotype (Ee) and a man with the genotype (ee) have a child. What is the probability that the child is heterozygous?
a)
0%
b)
25%
c)
50%
d)
75%
18.
In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b). If a brown cocker spaniel is crossed with a heterozygous black cocker spaniel, which of the following genotypic ratios can be expected?
a)
0BB : 2Bb : 2bb
b)
1BB : 2Bb : 1bb
c)
2BB : 0Bb : 2bb
d)
2BB : 1Bb : 0bb
19.

Every human body cell has how many chromosomes?

a)

23 chromosomes

b)

12 chromosomes

c)

46 chromosomes

d)

50 chromosomes

20.

If both alleles are the same in a genotype they are _________.

a)

homozygous dominant only

b)

homozygous recessive only

c)

heterozygous

d)

homozygous dominant or homozygous recessive

21.

What is another way of saying "hybrid"?

a)
heterozygous
b)
homozygous dominant
c)
homozygous recessive
d)
none of these choices
22.

What is another way of saying "purebred"?

a)
homozygous
b)
dominant
c)
recessive
d)
heterozygous
23.

__________________ is a diagram that can be used to predict the possible outcomes of a genetic crossing.

a)

Mendel Square

b)

Punnett Square

c)

Genetic Square

d)

Allele Square

24.
A _________ is an organism's gene combination or code. (Ex. Tt)
a)
genotype
b)
phenotype
c)
probability
d)
trait
25.

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

a)
0%
b)
25%
c)
50%
d)
75%