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Elza [17]
4 years ago
9

A mutation that causes changes in the amino acid sequence downstream of the mutation is called what?

Biology
1 answer:
ivann1987 [24]4 years ago
3 0
Base of the substitution of the codon or frameshift mutation
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4 years ago
Hydroxylamine is a mutagen that acts only on cytosine and causes C--&gt;T and G--&gt;A base pair changes (i.e. it causes transit
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Options for the question are not given. They are as follows:

a. arg or lys

b. ala

c. thr

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e. Only termination codons

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Explanation:

Four codons code for proline amino acid. These are CCT, CCC, CCA, and CCG. Hydroxylamine causes C to change into T or G to change into A.

If first position is changed in each codon:

CCT = TCT (UCU)

CCC = TCC (UCC)

CCA = TCA (UCA)

CCG = TCG (UCG)

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If second position is changed in each codon:

CCT = CTT (CUU)

CCC = CTC (CUC)

CCA = CTA (CUA)

CCG = CTG (CUG)

These codons produce Leucine amino acid.

Hence, out of the given options, option d. leu or ser is correct.

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Answer:

Explanation:

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