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Arada [10]
3 years ago
9

Most nonsense mutations in genes that encode structural proteins cause a null ("knockout") phenotype.

Biology
1 answer:
cestrela7 [59]3 years ago
4 0
  1. TGA (opal)

Answer:

Explained below

Explanation:

A mutation in a gene that results in total loss of the normal function of the gene product encoded by that gene, resulting in a Null phenotype.

Changes in DNA sequence are termed as nonsense mutation that introduce a stop codon, resulting in a non functional protein. This terminology results stop codons have also worked as nonsense codons.

There are three different stop codon-

In RNA

  1. UAG (amber)
  2. UAA (ochre)
  3. UGA (opal)

In DNA

  1. TAG (amber)
  2. TAA (ochre)
  3. TGA (opal)
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