Question

What are called chromosome​

Answer 1

$\bold{ANSWER}$

Chromosomes are the highly condensed coiled chromatin fibres . 

They were first discovered by Hofmeister in 1848

He noticed them in rapidly dividing cells of Tradescantia and called them nuclear filaments . 

Answer 2

Answer:

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.