NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
the relaxed phase of chromosomes (looks like a ball of yarn)
A
chromatin
B
chromosomes
C
chromatid
D
None of the above
Explanation: 

Detailed explanation-1: -During telophase, the “distance phase, ” the chromosomes reach the opposite poles and begin to decondense (unravel), relaxing into a chromatin configuration.

Detailed explanation-2: -The relaxed form of DNA that can be found in the nucleus is referred to as chromatin.

Detailed explanation-3: -A chromosome looks like a series of tiny yarns These globule-like yarns span anything from a few hundred thousand to a million base pairs, explained Heard. Base pairs (abbreviated as A, C, G and Ts) are the genome’s unit of measurement, and a person’s DNA consists of over 3 billion pairs.

Detailed explanation-4: -First, proteins called the core histones act as spool around which DNA is coiled twice to form a structure called the nucleosome. Nucleosomes are formed at regular intervals along the DNA strand, giving the molecule the appearance of “beads on a string”.

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