Question 251 of 668
The Central Dogma of molecular biology was proposed by _______
Francis Crick proposed the Central Dogma.
Molecular Basis of Inheritance MCQs
Class XII Biology • NCERT Based • NEET Practice
Question 252 of 668
In some viruses, the flow of information is in reverse direction, which is called _______
Retroviruses show reverse transcription (RNA to DNA).
Question 253 of 668
The length of DNA in a typical mammalian cell is approximately _______ meters.
The total length of double-stranded DNA in a human diploid cell is about 2.2 meters.
Question 254 of 668
In prokaryotes, DNA is held with some positively charged proteins in a region called _______
The region containing DNA in prokaryotes is called the nucleoid.
Question 255 of 668
In eukaryotes, there is a set of positively charged, basic proteins called _______
Histones are the basic proteins responsible for DNA packaging in eukaryotes.
Question 256 of 668
Histones are rich in the basic amino acid residues _______ and Arginine.
Histones are rich in Lysine and Arginine.
Question 257 of 668
Histones are organized to form a unit of eight molecules called a histone _______
The core of the nucleosome is a histone octamer.
Question 258 of 668
The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called _______
The nucleosome is the fundamental unit of chromatin packaging.
Question 259 of 668
A typical nucleosome contains _______ bp of DNA helix.
A nucleosome typically contains about 200 base pairs of DNA.
Question 260 of 668
Nucleosomes constitute the repeating unit of a structure in nucleus called _______
Chromatin is the thread-like structure composed of repeating nucleosomes.