OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
If a portion of DNA strand reads:3’ A A A T T T C 5’The matching strand would read ____
|
|
5’ T T T A A A G 3’
|
|
|
3’ T T T A A A G 5’
|
|
|
5’ A A A T T T C 3’
|
|
|
3’ U U U A A A G 5’
|
Explanation:
Detailed explanation-1: -The numbers 3′ and 5′ refer to the number of carbon atoms in a deoxyribose sugar molecule that a phosphate group binds to. The carbons in sugar are numbered clockwise, beginning with the oxygen atom. This asymmetry gives the DNA strand a “direction, ‘’ and the bases in the DNA are read from 5′ to 3′.
Detailed explanation-2: -One end is referred to as 5’ (five prime) and the other end is referred to as 3’ (three prime). The 5’ and 3’ designations refer to the number of carbon atom in a deoxyribose sugar molecule to which a phosphate group bonds.
There is 1 question to complete.