The correct answer is – Aneuploidy is a type of chromosomal abnormality that occurs due to the gain or loss of one or more chromosomes from a normal diploid set (which typically consists of 23 pairs of chromosomes in humans). In other words, aneuploidy refers to a condition in which an individual has an abnormal number of chromosomes in their cells, either more or less than the normal number. Aneuploidy can occur due to errors in chromosome segregation during meiosis, leading to the production of gametes with an abnormal number of chromosomes, or due to errors during cell division in early embryonic development. Some examples of aneuploidy include Down syndrome (trisomy 21), Turner syndrome (monosomy X), and Klinefelter syndrome (XXY). Aneuploidy can lead to a range of developmental abnormalities and health issues, depending on the specific chromosomes involved and the extent of the imbalance.
