In tertiary structure of $DNA$, what is a histone octamer?
A complex consisting of eight positively charged histone proteins (two of each $H2A, H2B, H3 and H4$) that aid in the packaging of $DNA.$
A complex consisting of eight negatively charged histone proteins (two of each $\mathrm{H} 2 \mathrm{~A}, \mathrm{H} 2 \mathrm{~B}, \mathrm{H} 3$ and $\mathrm{H} 4$ ) that aid in the packaging of DNA.
A complex consisting of eight negatively charged histone proteins (two of each $\mathrm{H} 2 \mathrm{~A}, \mathrm{H} 2 \mathrm{~B}, \mathrm{H} 3$ and $\mathrm{H} 4$ ) that aid in the packaging of DNA.
A complex consisting of nine positively charged histone proteins (H1 and two of each $\mathrm{H} 2 \mathrm{~A}, \mathrm{H} 2 \mathrm{~B}, \mathrm{H} 3$ and $\mathrm{H} 4$ ) that aid in the packaging DNA.
A complex consisting of nine negatively charged histone proteins (H1 and two of each $\mathrm{H} 2 \mathrm{~A}, \mathrm{H} 2 \mathrm{~B}, \mathrm{H} 3$ and $\mathrm{H} 4)$ that aid in the packaging of DNA.
Different types of chromosomes can be recognised by the position of the following separating the two arms
Which of the following bases is absent in the coding dictionary
$tRNA$ is composed of about how many nucleotides