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Charra [1.4K]
3 years ago
6

Samples as small as a few skin cells can potentially contain DNA. T/F

Biology
1 answer:
Travka [436]3 years ago
8 0

<u>Answer</u>: True

<u>Explanation</u>:

  • DNA (Deoxyribonucleic acid) is the genetic material present inside the nucleus of all eukaryotic cells.
  • Samples as small as few skin cells also contain DNA and the presence of DNA in skin cells is often used to identify the DNA of a person in a crime scene.
  • Further, with the use of PCR technology, the small amount of DNA obtained from skin cells can be amplified into many copies.
  • Therefore, the given statement is true.
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Full question attached

Answer/ Explanation:

The original DNA sequence has a point mutation changing a G to a T. The resulting mRNA produced is always complementary to the DNA from which it is synthesised, so the original mRNA sequence has a T, whereas the mutated mRNA has a U. The tRNA is complementary to the mRNA, so the original has a G, and the mutated has a T.

<h3>Original DNA</h3>

GTTGGCGAATGAACGGAGGCTGACGTCTAAGCCTAGAAAAATTGG

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CAACCGCUUACUUGCCUCCGACUGCAGAUUCGGAUCUUUUUAACC

tRNA

GUUGGCGAAUGAACGGAGGCUGACGUCUAAGCCUAGAAAAAUUGG

<h3>_______________________________________________</h3><h3>Mutated DNA</h3>

GTTGGCGAATGAACTGAGGCTGACGTCTAAGCCTAGAAAAATTGG

RNA

CAACCGCUUACUUGUCUCCGACUGCAGAUUCGGAUCUUUUUAACC

tRNA

GUUGGCGAAUGAACTGAGGCUGACGUCUAAGCCUAGAAAAAUUGG

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