question_answer

Chromosomes with equal arms are called:

A)  metacentric                      

B)  telocentric                        

C)  acentric                              

D)         polycentric

Correct Answer: A

Solution :

                Chromosomes are of following types on the basis of position of centromere on them. (i) Metacentric: Centromere occur at the centre thus such type of chromosomes contain two equal arms. At anaphase stage of cell division these chromosomes are looked like V  shaped. (ii) Submetacentric: Centromere is sub median, they look like L shaped during anaphase. (iii) Acrocentric: Centromere is sub-terminal, they look like J shaped during anaphase. (iv) Telocentric: Terminal centromere they look like T shaped during anaphase. (v) Acentric: Chromosomes do not have centromere. They are of rare occurrence.