By Team Aakash Byju's | 16th January 2023

A

Which of the following statements about histones is not true?

Histones are very similar between species.

Histones have many basic amino acids.

Histones are rich in lysine and arginine.

Each histone has one single gene that codes for it.

B

C

D

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?

Detailed Explanation

The correct answer is  D) Each histone has one single gene that codes for it.

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The basic amino acids that compose histone proteins are homologous within a particular species.

Histone

DNA Double Helix

The lysine and arginine amino acid residues in these proteins are abundant.

DNA

mRNA

Protein

Transcription

Translation

The chromosome structure is formed after these proteins form the nucleosome by attaching to the DNA.

Chromosome Structure

Somatic Cell

DNA Structure

Gene  Structure

DNA

Chromosome

Chromosome Structure

Nucleus

The histone protein is encoded by more than one gene.

Histones

DNA

Chromosome

Histone

Nuclesome

The haploid genome has two H2A genes and one H2B gene.

DIPLOID (2n)

HAPLOID (n)

Two Copies

One Copy

of Chromosome

of Chromosome