Genetics Study Test With Answer Sheet (Page 3 of 3) in pdf

Genetics Study Test With Answer Sheet Page 3

13) What does DNA stand for?

Deoxyribo Nucleic Acid

14) What are the three main components of DNA?

Phosphates

Sugars

and

Nitrogen Bases

15) What are the four bases that are used in DNA?

Adenine

Thymine

Cytosine

G uanine

16) How do the bases pair up in DNA?

A--T

C--G

17) Draw the shape of DNA:

18) Explain the memory m aker: PBS makes Kids.

Phosphates, Bases and Sugars make DNA, which makes a new person

19) What would the complementary strand of DNA be for the following sequence of bases:

A T A C G T T T G C A A

T A T G C A A A

C G T T

20) DNA has the ability to make an exact copy of itself. Draw and explain how DNA Replicates. Why is this

ability important for life to continue?

The DNA molecule splits apart and each ½ strand of DNA is used as

a template to make a new molecule. Each new DNA molecule is an exact copy of the original molecule, but

contains one old strand and one new strand. In order for a parent cell to make a daughter cell, there must be a

set of instructions. The ability to pass on those instructions is necessary to ensure that the cells function

correctly. Making an exact copy of the instructions during replication is part of what makes DNA an

information molecule.

Genetics Study Test With Answer Sheet Page 3