Question

From the following identify the INCORRECT statement/s with respect to the chromosomes.

i. Chromosomes are capable of self replication and play vital role in heredity, mutation, variation, and evolutionary development of eukaryotic species.

ii. Chromosomes are visible during cell division.

iii. Chemically eukaryotic chromosomes are made of mRNA, histone and non-histone proteins.

iv. The number of chromosomes varies within the population of a particular species.

Options

• ii and iii

• i, ii and iv

• iii and iv

• i and iii

Answer 1

iii and iv

Explanation:

iii. DNA, histone, and non-histone proteins make up eukaryotic chromosomes chemically.

iv. For each species, the number of chromosomes is unique and consistent.