Exam Qs ch 8- Control of gene expression

Question 1

Explain why primers only bind to specific DNA fragments

Answer 1

• They have a specific base sequence

- That is complementary

Question 2

When using DNA probes, why attach probes to chromosomes of cells in mitosis?

Answer 2

• During mitosis- chromosomes become visible

- So can see which chromosomes DNA is attached to

Question 3

Name the enzyme used to produce cDNA from mRNA

Answer 3

Reverse transcriptase