Question

(a) Differentiate between repetitive and satellite DNA.
(b) How can satellite DNA be isolated? Explain.
(c) List two forensic applications of this technology.

Answer 1

Answer:

. Satellite DNA is separated from the genomic DNA by density gradient centrifugation; the satellite DNA forms smaller peaks, while the genomic DNA forms a major peak.

c. Forensic applications of this technology are :

i. To identify a criminal from the crime site.

ii. It is the basis of paternity testing, in case of disputes.

iii. In determining population and genetic diversities.

Explanation:

A in fig.

Answer 2

Repetitive DNA. Repetitive DNA can be divided into two classes: the tandem repetitive sequences (known as satellite DNA) and the interspersed repeats. The term satellite is used to describe DNA sequences that comprise short head-to-tail tandem repeats incorporating specific motifs.....

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