Question

Describe the major two features of telomere and Centromere?​

Answer 1

Telomere

•Telomere prevent fussion from other present chromosome.

•Telomere is the polar end of a chromosome.

•Telomere is rich with Guanine base(TTAGGGG).

•Telomere becomes shorter as age becomes older and older.

•Telomere is synthesized by telomere enzyme (the name of the enzyme is Ribonucloprotein).

•Also as during ageing telomere is lost due to decrease in nitrogenous waste which leads to reduce in DNA replication.

Centromere

•The main function of centromere is to connect two centrioles.

•In other words they join two longitudinal half chromosome.

•Centromere is also known as primary constriction because they play a vital role in separation and connection during some phase.

•Chromosome is structurally narrow at the point of centromere.

Answer 2

$\huge{\boxed{\sf{TELOMERE}}}$

Telomere is composed of nucleotide sequences which is present at the very end of a chromosome.

It plays a role in preventing the mixing up of two chromosomes by sealing the terminal end of any chromosomes.

It is seen that telomere ends become short when cell dividion occurs.

However, it again attains it normal length when an enzyme called telomerase reverse transcriptase works upon it.

$\huge{\boxed{\sf{CENTROMERE}}}$

Centromere can be described as a point where the chromatids of a chromosome are confined together.

Centromere has a very special structure called kinetochores. Spindle fibres attaches to this disc like structure.

Or we can say that kinetochores attaches the chromosome to microtubules.