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Heredity Review

Total questions: 39

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
What percentage of chromosomes are handed down by a sperm cell?
a)
75%
b)
25%
c)
50%
d)
100%
2.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2 
3.
What is an advantage of sexual reproduction?
a)
Allows genetic variation
b)
Only needs one parent
c)
Happens very quickly
d)
Offspring are exact copies of parent
4.
In which type of cells will mitosis occur?
a)
egg cells
b)
sperm cells
c)
jail cells
d)
Body cells except the sperm and egg cells
5.

When you start with 1 cell, at the end of mitosis, how many cells will you have and how will they look?

a)

1 and identical

b)

2 and identical

c)

2 and unique

d)

4 and unique

6.

How many cells are created at the end of Mitosis?

a)

1 diploid cell

b)

2 diploid cells

c)

3 diploid cells

d)

4 diploid cells

7.
The cells produced via meiosis are called:
a)
sex cells (gametes)
b)
somatic cells
c)
body cells
d)
skin cells
8.
After meiosis is complete how many cells will there be?
a)
1
b)
2
c)
3
d)
4
9.
After meiosis is complete, the new cells:
a)
are all identical
b)
are all different
c)
are half identical and half different
d)
are all stretched out
10.
In mitosis, the two resulting cells are
a)
different from the starting cell and identical to each other.
b)
different from the starting cell and different from each other.
c)
identical to the starting cell and different from each other.
d)
identical to the starting cell and identical to each other.
11.

Fruit fly body cells have 8 chromosomes. What would be the diploid number of chromosomes?

a)

16 chromosomes.

b)

46 chromosomes.

c)

8 chromosomes.

d)

4 chromosomes.

12.

which is heterozygous ?

a)

Tt

b)

TT

c)

tt

d)

t

13.

Which is homozygous ?

a)

Zz

b)

SS

c)

ss

d)

d

14.

A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?

a)

100% BB

b)

75% BB and 25%Bb

c)

50 % BB and 50% Bb

d)

50% Bb and 50% bb

15.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
16.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
17.

What is the phenotype for Bb if Brown fur (B) is dominant to white fur (b).

a)

Brown

b)

White

c)

Brown and white

d)

Light Brown

18.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
19.

Which type of inheritance is shown?

a)

Incomplete Dominance

b)

Co-Dominance

c)

Mendelian Genetics

20.

What pattern of inheritance is shown?

a)

Incomplete dominance

b)

Co-Dominance

c)

Mendelian Genetics

21.

My eyes are naturally blue.

a)

Acquired

b)

Inherited

22.

Look at the picture.

Purple dyed hair.

a)

inherited

b)

acquired

23.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
24.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
25.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
26.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
27.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
28.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
29.

In the following structure, the circled item is a

a)

chromosome

b)

chromatid

c)

centromere

d)

chromatin

30.

When DNA is loosely coiled it is called ____________.

a)

chromatin

b)

karyotype

c)

chromosome

d)

centromere

31.

What genotype pair would produce a recessive offspring?

a)

BB x BB

b)

BB x Bb

c)

bb x BB

d)

Bb x Bb

32.

What 3 structures are in the diagram from top to bottom?

a)

Chromatid, Chromosome, DNA

b)

Chromatin, DNA, Chromosome

c)

Chromosome, Chromatin, DNA

d)

Chromosome, Chromatid, DNA

33.

What is the biggest advantage of sexual reproduction?

a)

Less time

b)

Genetic diversity

c)

Less complex

d)

Everyone is identical

34.

Humans have 46 chromosomes, what is the diploid number?

a)

23

b)

46

c)

92

35.

Which of the gentoypes would show the dominant trait?

a)

BB

b)

Bb

c)

bb

d)

both BB and Bb

36.

A gene is a piece of DNA that codes for...

a)

amino acid

b)

ribosome

c)

protein

d)

glycol

37.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
38.
Which choice best represents the genotype of this cross?
a)
1 Yy: 2 yy: 0 YY
b)
2 Yy: 2 yy: 0 YY
c)
3 Yy: 1 yy: 0 YY
d)
1 Yy: 3 yy: 0 YY
39.

Why do sibling look similar but not identical?

a)

Humans use asexual reproduction so all the genes are the same.

b)

Humans use sexual reproduction so all the genes are the same.

c)

Humans use sexual reproduction so they share some genes with their sibling.

d)

Human use aseuxal reproduction so they share some genes with their siblings.

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