Differentiate between the followings:
(a) Repetitive DNA and Satellite DNA
(b) mRNA and tRNA
(c) Template strand and Coding strand
Repetitive DNA | Satellite DNA |
Repetitive DNA are short sequences which are repeated many times. | Satellite DNA are DNA sequences that contain highly repetitive DNA |
2.
mRNA | tRNA |
Messenger RNA acts as a transcript . | tRNA acts as and adator molecule |
2.Linear in structure |
2. It has a structure similar to clover leaf . |
3.
Template strand | Coding strand |
1. It acts as an template for the synthesis of mRNA. | 1.It does not act as an template. |
2. It has an sequence complementary to the mRNA | 2. It has a sequnce similar to the mRNA. |
3. It runs in 3'-5' direction | 3.It runs from 5'-3' direction. |
Or
Why all the three RNAs are needed to synthesise a protein in a cell ?