Question

What are the two types of aneuploidy?

Answer 1

Aneuploidy:

1. Aneuploidy refers to the loss or gain of one or more chromosomes. The two types of aneuploidy are monosomy and trisomy.
2. Aneuploidy results due to the nondisjunction of chromosomes at the time of cell divisions.
3. When chromosomes fail to separate, one cell contains more chromosomes and another daughter cell contains fewer chromosomes.

The two types of aneuploidy are:

1. Monosomy: A type of aneuploidy that is characterized by the loss of a single chromosome, it is represented via 2n-1 and can result from nondisjunction in the cellular division, specifically meiosis.
2. Trisomy: A type of aneuploidy characterized by an extra copy of the chromosome, it is represented by means of 2n + 1 and occurs due to nondisjunction. i.e when one of the chromosomes pairs fails to separate during cell division, particularly, meiosis.