Question

several organisms have a homologous protein (inherited from a common ancestor) that is highly similar at the amino acid level. you are comparing the genes that code for these proteins in the different organisms when you note that one of the codon nucleotide positions shows more nucleotide variation than the other nucleotide positions. in which codon nucleotide position do you expect to see the most variability among species?

Answer 1

Third nucleotide position.

What is genes?

The chromosomes contain genes that code for proteins.

A gene is composed of a deoxyribonucleotide (DNA) sequence that is converted by RNA polymerase into a messenger ribonucleotide (mRNA) sequence.

With the aid of the ribosome, this mRNA sequence is further translated into the amino acid sequence, which folds to form the functional protein.

Each triplet nucleotide read by the ribosome codes for an amino acid. The ribosome reads the mRNA sequence as triplets (three nucleotides together).

Such triplet nucleotides are referred to as codons.

The amino acid that each codon encodes is shown in a table called the genetic code.

The genetic code, however, is inherently degenerate. This implies that many genes can code for a single amino acid.

To learn more about genes refer to:

https://brainly.com/question/1480756

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