Question

Beads on string of a are seen in b which condense to form
chromosomes in c stage of cell division.
(2012)
A) Chromonema, b-Chromatin, c-Metaphase
EXPLAIN PLZ​

Answer 1

Ans

Explanation:

we know that during cell division DNA of a cell condenses to form chromosomes so during that process a way to form chromosome it leads to form nucleosome in the middle of path

when we observe this nucleosome under microscope it appears as beads on the string this is nothing but also called as chromonema

the fore stage of chromosomes is chromatin

we can see this chromosomes in metaphase bcoz it is best suitable phase to understand chromosomal behaviour as we can find them as plate formed near cell equator region

therefore a is chromonema

b is chromatin

c is metaphase