Question

Assertion:- Chromosomes are constituted by DNA and protein.
Reasons. These are the thread like structure presents in the nucleus.​

Answer 1

Explanation:

both are true and (R) is the correct explanation of (A)

Answer 2

Answer:

The thread like structure present in the nucleus are called the chromosomes or the chromatin, when the degree of condensation is very less.

A. Nucleolus is the region on the chromosomes that codes for the ribosomal RNA.

B. Genes are the segments of DNA that code for the proteins. These are located on the chromosomes.

C. The chromosomes are the thread like structures made up of DNA and proteins and are present in the DNA.

D. Ribosomes are the ribo-nucleoproteins present in the cytoplasm that take part in protein formation.

Hence, the correct answer is 'Chromosomes'

Explanation:

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