dna

Question 1

semi conservatve replication defenition

Answer 1

process of DNA replication which each newly synthesised DNA consists of one parental strand and one newly synthesised strand

Question 2

whats the 3 steps of enzymes in replication

Answer 2

opening and unwinding
dna synthesis
joining of DNA fragments

Question 3

1st step of replication

Answer 3

dna helicase breaks hydrogen bonds between 2 parental strands
DNA helix unwinds forming Y shaped structures called replication forks

Question 4

2nd step of replication

Answer 4

dna synthesis - DNA polymerase catalyses synthesis of new DNA strands using parental DNA

add nucleotides to growing DNA strand using complementary base pairing rule

Question 5

3rd step of dna replication

Answer 5

joining of DNA fragments - formation of phosphodiester bonds between sugar and phosphate groups

Question 6

one gene one protein hypothesis

Answer 6

suggets that each gene in DNA carries info neccessary to produce a single protein

Question 7

how many bases are there

Answer 7

4

Question 8

how many bases per codon

Answer 8

3
cause triplet code like CGA

Question 9

how many different codons are there all in all

Answer 9

64