2.3.3 - Nature Of The Genetic Code

Question 1

What Is The Sequence Of DNA Nucleotide Bases Within A Gene Determined By?

Answer 1

Triplet code.

Question 2

What Are The Features Of The Genetic Code?
(3 Points)

Answer 2

~ Non-overlapping.

~ Degenerate.

~ Is a triplet code, containing start and stop codon.

Question 3

The Genetic Code Is Non-Overlapping, What Does This Mean?
(3 Points)

Answer 3

~ Each triplet is only read once.

~ Adjacent codons do not overlap.

~ Triplets do not share bases.

Question 4

The Genetic Code Is Degenerate, What Does This Mean?
(2 Points)

Answer 4

~ More than one triplet, codes for the same amino acid.

~ Can limit the effect of mutations.

Question 5

The Genetic Code Is A Triplet Code, What Does This Mean?
(2 Points)

Answer 5

~ Each three bases codes for one amino acid.

~ Contains start and stop codons, which can start or stop protein synthesis.

Question 6

What Is A Gene?

Answer 6

A series of bases on a DNA molecule which codes for a series of amino acids in a polypeptide chain.

Question 7

What Is The Order Of Bases On DNA Called & What Does It Consist Of?
(2 Points)

Answer 7

~ Called the genetic code.

~ Consists of triplets of bases.

Question 8

What Does Each Triplet Of Bases Code For?

Answer 8

A particular amino acid.

Question 9

What Are The Amino Acids Joined Together By & What Do They Form?
(2 Points)

Answer 9

~ Joined together by peptide bonds.

~ Form a polypeptide chain.

Question 10

What Are The Non Coding Sections Of DNA Called?

Answer 10

Introns.

Question 11

What Are The Coding Sections Of DNA Called?

Answer 11

Exons.