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Worksheets

Genetics

Total questions: 39

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

How many chromosomes do humans have?

a)

23

b)

92

c)

46

d)

184

2.

TT; big letters are ___________

a)

recessive

b)

dominant

c)

nothing

3.

tt, small letters are ______

a)

DNA

b)

dominant

c)

recessive

4.

a ___________ is a letter combination of an allele

a)

phenotype

b)

genotype

c)

dominant

d)

recessive

5.

a __________- is the trait that we see; black, long, blue, tall

a)

DNA

b)

recessive

c)

genotype

d)

phenotype

6.

Tt, Hh, Rr

a)

homozygous

b)

heterozygous

c)

recessive

d)

phenotypes

7.

TT, RR, WW, SS

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

d)

recessive

8.

rr, tt, hh, gg

a)

homozygous dominant

b)

heterozygous

c)

homozygous recessive

d)

strong

9.

This image is called a ____________

a)

triangle

b)

punnett square

c)

square

d)

rectangle

10.

How does this organism reproduce? Select all that apply.

a)

Sexual reproduction

b)

Asexual reproduction

c)

Budding

d)

Meiosis

11.

How many Chromosomes do we inherit from our parents?

a)

23 from dad and 23 from mom, or 46 total

b)

13 from dad and 13 from mom, or 26 total

c)

13 from dad and 33 from mom, or 46 total

12.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
13.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
14.
In asexual reproduction, all of the offspring are:
a)
Physically Identical
b)
Genetically Identical
c)
Physically and Genetically Identical
d)
Not Identical
15.
How many parent(s)are needed for asexual?
a)
4
b)
1
c)
9
d)
100
16.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2 
17.

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). Which of the following represents the genotype of a pea plant that is heterozygous?

a)

RR

b)

round

c)

Rr

d)

wrinkled

e)

rr

18.

In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, the offspring in box 4 would:

a)

be white.

b)

be heterozygous.

c)

be gray.

d)

be homozygous.

19.

In mice, black fur (B) is dominant to white fur (b). According to the Punnett square shown, how many offspring would be black?

a)

0

b)

1

c)

2

d)

3

e)

4

20.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
21.

There are 42 chromosomes in a panda cell. How many would be in sperm or egg?

a)

42

b)

21

c)

84

d)

104

22.

What is the correct order for mitosis?

a)

Metaphase, prophase, anaphase, telophase

b)

Cytokenisis, prophase, telophase, metaphase

c)

Prophase, telophase, anaphase, metaphase

d)

Prophase, metaphase, anaphase. telophase

23.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
24.

An iguana has 34 chromosomes in each body cell. A cell went through mitosis; how many chromosomes are in the newly formed body cell?

a)

34

b)

17

c)

72

d)

12

25.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
26.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
27.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
28.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
29.

In a pedigree chart, men are represented by

a)

Circles

b)

Diamonds

c)

Squares

30.
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
31.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
32.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
33.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
34.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
35.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
36.

What are the steps of Mitosis?

a)

Prophase, Anaphase, Metaphase, Telophase

b)

Anaphase, Telophase, Metaphase, Prophase

c)

Telophase, Metaphase, Anaphase, Prophase

d)

Prophase, Metaphase, Anaphase, Telophase

37.

We can grow a new stalk of celery from an existing stalk. What is this called?

a)

Budding

b)

Vegetative propagation

c)

Sexual reproduction

d)

Binary fission

38.

Which process creates sex cells?

a)

Mitosis

b)

Meiosis

c)

Both

39.

Which process creates body cells with all chromosomes?

a)

Mitosis

b)

Meiosis

c)

Both

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