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.
Cri-du-chat syndrome in humans is caused by the
A normal spontaneous rate for a single gene is one mutation in every……replication
Transition type of gene mutation is caused when
An auxotroph is