Name: Date: Hour: DNA WORKSHEET

DNA contains the for how to make structures in our body and how our body works.

DNA is found in the of cell.

DNA is found in living things.

The sides of DNA are made of and groups.

List the 4 nitrogen bases found in DNA:





Which nitrogen base is found in RNA only?

Which DNA base is NOT found in RNA?

Which two DNA nitrogen bases are longer? and

Which two DNA nitrogen bases are shorter? and

What does guanine always pair with?

What does thymine always pair with?

What does cytosine always pair with?

In DNA, what does adenine pair with?

In RNA, what does adenine pair with?

Concept Map [ Structure of DNA] Concept Map [How Genes Work]

A long strand of DNA is called a A section of DNA is called a

15. 19.

and is divided into sections called which is the instructions for a

16. 20.

which are divided into sections called which causes a

17. 21.

which consist of 3 like blue eyes or curly hair.

18.

22. Proteins are made of .

23. There are amino acids our body must have to make proteins.

24. of these amino acids are made by our .

25. must come from our .

Concept map [How proteins are made]

3 nitrogen bases are called a

26.

which codes for an

27.

which when several are connected together form a

28.

which causes a

29.

to be formed or a

30.

to happen in the body.


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

Use the picture above to answer questions 31-34. *Draw this out on your paper.*

To make the bottom row the other side of DNA, what would the nitrogen bases be? (Draw a line in between the codons.)

If the bottom row was a strand of RNA being made, what would the nitrogen bases be? (Draw a line in between the codons.)

Using the top row, how many codons does this gene have?

Using the top row, what is the name of the 3rd codon?



What does DNA look like?

How many strands, or sides, does DNA have? RNA?

For the following statements, write true or false:

37. Environmental influences alone determine some characteristics, or traits.
38. Genes alone determine some characteristics, or traits.
39. The combination of genes and environmental influences determine some traits.

40. A mutation is a in the of the bases.

BONUS: Write which type of mutation has occurred: Original Gene: TTCAGGATG

TTGAGGAT TTCAGCGATG TTCAGATG