A) Mobile genetic elements, tranposons were visualised by Barbara McClintock.
B) Udder cell and somatic cell is used to produce the cloned sheep by nuclear transplantation method.
C) In pedigree analysis, a person immediately affected by and action is called propositus.
D) DNA ligases are used to cleave a DNA molecule.
Correct Answer: D
Solution :
[d] Restriction endonuclease cleaves DNA molecules only at specific nucleotide sequence called restriction sites. DNA ligase enzymes is used to joins bits of DNA.
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