Unit 3-Molecular Genetics Lesson 5 8.0

Question 1

What are the two strands of DNA?

Answer 1

Anti-sense strand and Sense strand.

Question 2

What is the direction of the Anti-sense strand?

Answer 2

Runs 3’→5’.

Question 3

What is the role of the Anti-sense strand?

Answer 3

It is the template strand that is transcribed and has the complementary genetic code of the mRNA.

Question 4

What is the direction of the Sense strand?

Answer 4

Runs 5’→3’.

Question 5

What is the role of the Sense strand?

Answer 5

It is the coding strand that is not transcribed and has the same genetic code as the mRNA (except U instead of T).

Question 6

How does the genetic code of the Anti-sense strand compare to mRNA?

Answer 6

It has the complementary genetic code of the mRNA.

Question 7

How does the genetic code of the Sense strand compare to mRNA?

Answer 7

It has the same genetic code as the mRNA, except it contains Thymine unlike mRNA which contains Uracil instead