Metacentric, submetacentric, acrocentric, and telocentric are the four types of chromosomes. In metacentric chromosomes, centromere is found in the middle. In telocentric chromosomes, centromere is found at one end. Thus, this is the key difference between metacentric and telocentric chromosomes.
What is the function of Telocentric chromosome?
maderaspatensis the six pairs of telocentric chromosomes show a regular segregation during meiosis. The ends of these rod-shaped chromosomes are found projected towards the poles during mitotic anaphase. These are in- dicative of the presence of a functional centromere at their terminal ends.
What are the 4 types of chromosomes?
On the basis of the location of the centromere, chromosomes are classified into four types: metacentric, submetacentric, acrocentric, and telocentric.
What do you mean by Acrocentric chromosome?
Acrocentric chromosome: A chromosome in which the centromere is located quite near one end of the chromosome. Humans normally have five pairs of acrocentric chromosomes.
What do you understand by telocentric chromosome 11?
(iv) Telocentric chromosome
The chromosome in which the centromere is located at one of the terminal ends is known as a telocentric chromosome. During anaphase, they appear i-Shaped.
Do humans have acrocentric chromosomes?
In humans, chromosomes 13, 14, 15, 21, and 22 are acrocentric, and all of these chromosomes are associated with Robertsonian translocations. The short arms of all of the acrocentric chromosomes contain numerous copies of the genes coding for ribosomal RNA.
Do humans have Metacentric chromosomes?
A chromosome is metacentric if its two arms are roughly equal in length. In a normal human karyotype, five chromosomes are considered metacentric: 1, 3, 16, 19, 20.