The Gentic Code

Question 1

What is meant by genetic code

Answer 1

The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins by living cells.

Question 2

What is a codon

Answer 2

A sequence 3 bases on the DNA or RNA

Question 3

What is a gene

Answer 3

A sequence of bases on a DNA molecule coding for a sequence of amino acids in a polypeptide chain

Question 4

What is non coding DNA

Answer 4

Non-coding DNA sequences do not code for amino acids

Question 5

What is a non overlapping code

Answer 5

each base in a sequence is read once and is only part of one triplet

Question 6

What is a degenerate code

Answer 6

A feature of the genetic code; more than one triplet can code for a particular amino acid

Question 7

What is the benefit of a organism having a degenerate code

Answer 7

Mutations can happen any time the DNA is copied- the degenerate code at least partly protects living organisms from their effects

Question 8

triplet nature

Answer 8

a triplet code make a genetic code for 64 combinations (4 x 4 x 4 ) of the GC and provide plenty of info in the DNA molecule and specifically the placement of 20 AA

Question 9

What is + of the GC being degenerate

Answer 9

protects and prevents mutation affecting the functionality of the protein