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Answer» (a) Repetitive DNA and satellite DNA | satellite DNA Repetitive DNA | Satellite DNA | | Repetitive DNA are DNA sequences that contain small segments, which are repeated many times. | Satellite DNA are DNA sequences that contain highly repetitive DNA. |
(b) mRNA and tRNA | mRNA | tRNA | | mRNA or messenger RNA acts as a template for the process of transcription. | tRNA or transfer RNA acts as an adaptor molecule that carries a specific amino acid to mRNA for the synthesis of polypeptide. | | It is a linear molecule | It has clover leaf shape. |
(c) Template strand and coding | Template strand | Coding strand | | Template strand of DNS act as a template for the synthesis of mRNA during transcription | Coding strand is a sequence of DNA that has the same base sequence as that of mRNA (except thymine that is replaced by uracil in DNA) | | It runs from 3" to 5" | It runs from 5" to 3" |
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