How many types of chromosomes are there based on the position of the centromere? Explain.

Read the following statements $:-$
$(i)$ Centromere is present in the middle of the chromosomes and forms two equal arms.
$(ii)$ Chromosome has a terminal centromere.
$(iii)$ Centromere lies close to the end of the chromosome forming one extremely short and one very long arm.
$(iv)$ Centromere lies slightly away from the middle of the chromosome resulting in one shorter arm and one longer arm.
Select the correct option as per the codes given below $:-$

Who coined the term '$chromosome$'?

The chemical nature of the chromosome is as follows:

Telocentric chromosome differs from acrocentric chromosome in that

Diagrammatic representation of the karyotype of a species is called: