DNA Replication (D1.1)

Question 1

Describe semi-conservative DNA replication (4)

Answer 1

hydrogen bonds between bases break

DNA splits into 2 strands

free floating nucleotides pair with complementary base in strands

2 DNA strands form

Question 2

Reasons for DNA Replication (2)

Answer 2

cell division - new cells need new DNA for growth + tissue repair

reproduction - gametes require DNA to pass on genetic information