Genetic Information, Variation & Relationships between Organisms

Question 1

Introns and Extrns

Answer 1

Eukaryotic dna have non coding regions called introns and coding region called extrons

Question 2

Gene

Answer 2

Section of dna that contains the coded info for making polypeptides and functional rna

Question 3

Locus

Answer 3

Location of a gene within the whole dna molecule /chromosome

Question 4

Featured of genetic code

Answer 4

1) dna codes for amino acids 3 base pairs are needed to code for an amino acid
2)only 20 amino acids occur regularly in proteins
3)each amino acids has it’d own code of bases
4)there are four bases present on dna adenine thymine cytosine guanine
5)if each bases coded for one amino acid then we could only have a max of four amino acids
6)two bases together coukd code for 16 amino acids
7)three bases together can code for 64 amino acids
8) 64 possible triplets and only 20 amino acids
9)code is degenerate

Question 5

Genetic code is Degenerate

Answer 5

Most amino acids are codes for by more than one triplet

Question 6

Genetic code is non overlapping

Answer 6

This means that each base is only read once

Question 7

Genetic code is universal

Answer 7

Each triplet codes for the same amino acids in all organism on earth