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DNA & Genetics

Total questions: 19

Worksheet time: 1hrs 9mins

Name
Class
Date
1.

What are the four bases of DNA?

a)

Adenine

b)

Thymine

c)

Guanine

d)

Cytosine

2.

Select the THREE types of Mutations.

a)

Substitution

b)

Addition

c)

Deletion

d)

Insertion

e)

Division

3.

Which base pair always pairs with Thymine?

a)

Guanine

b)

Cytosine

c)

Adenine

4.

Which base pair always pairs with Guanine?

a)

Thymine

b)

Cytosine

c)

Adenine

5.

What carries our genetic code?

a)

recessive

b)

genotype

c)

base

d)

DNA

6.
Are all mutations bad?
a)
Yes
b)
No
7.
The twisted ladder structure of DNA. Two strands of nucleotides wound about each other.
a)
protein
b)
gene
c)
double helix
d)
allele
8.

True/False:

Having extra chromosomes can cause genetic disorders or even be deadly.

a)

True

b)

False

9.

How many PAIRS of chromosomes does a normal human being have?

a)

21

b)

22

c)

23

d)

24

10.

How many TOTAL chromosomes does a normal human being have?

a)

44

b)

45

c)

46

d)

98

11.

Single stranded genetic material responsible for copying DNA?

a)

DNA

b)

AND

c)

RNA

d)

QRC

12.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
13.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
14.

DNA Replication is defined as

a)

the process of copying a DNA molecule to make another DNA molecule.

b)

the process of copying a chromosome.

c)

the process of copying a cell.

15.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
16.
DNA contains the bases Adenine, Guanine, Cytosine and Thymine.  Which base is replaced in RNA by another base?
a)
Adenine is replaced by Uracil
b)
Thymine is replaced by Uracil
c)
Guanine is replaced by Uracil
d)
Cytosine is replaced  Uracil
17.
During the process of ___________, the codons produced after DNA makes mRNA. 
a)
decoding
b)
translation
c)
transcription
d)
transforming
18.
A series of amino acids linked together will produce a __________________.
a)
carbohydrate
b)
protein
c)
lipid
d)
sugar
19.

In DNA adenine (A) bonds to thymine (T) and guanine (G) bonds to cytosine (C). What is the bonding scheme in RNA?

a)

A-C and G-U

b)

A-U and C-G

c)

A-T and C-G

d)

None of these

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