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Question

Identifying all the genes that are expressed as RNA can be done by:
[0.7 mark]

A
Sequence annotation
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B
Expressed sequence tags
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C
DNA fingerprinting
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D
DNA polymorphism
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Solution

The correct option is B Expressed sequence tags
Expressed sequence tag is a short sub-sequence of a cDNA sequence. Identifying all the genes that are expressed as RNA can be done by expressed sequence tags (ESTs).

Sequencing the whole set of genome that contained all the coding and non-coding sequence and assigning different regions in the sequence with functions is termed as sequence annotation.

DNA fingerprinting involves identifying differences in some specific regions in DNA sequence called as repetitive DNA.

If different DNA sequences are observed in a population, it is referred to as DNA polymorphism.

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