DNA

Question 1

What characteristics must genetic material possess? (3)

Answer 1

It has to contain complex information and encode a phenotype
It has to replicate faithfully to transmit this information
It must allow for retention of advantageous genes and acquisition of useful new genes

Question 2

Primary structure of DNA (1)

Answer 2

Deoxyribonucleotides

Question 3

Secondary structure of DNA (3)

Answer 3

The double helix
Hydrogen bond and base pairing
Antiparallel complementary DNA strands

Question 4

Secondary forms of DNA (3)

Answer 4

A form
B form
Z form

Question 5

Hairpins (2)

Answer 5

Non-contiguous complementary sequences form stems and loops

Contiguous complementary sequences form stems