Question

Briefly explain how the existence of aneuploidies has

helped geneticists assess the genetic basis for sex determination in
humans. and locate genes on specific chromosomes.

Answer 1

Aneuploidy refers to the change in chromosomal number 23, which can lead to genetic diseases.

Step-by-step explanation:

Numerical abnormalities in sexual chromosomal abnormalities involve the loss or gain of a sex chromosome generating aneupliodes individuals. Generally, the loss of chromosomes has a greater impact on an individual than the gain, although this can also have serious consequences.

Within sexual aneuploidies we can distinguish the following:

· Sexual trisomies: it is a common disorder that is usually detected at puberty since there are no characteristic physical features in infants or children. Trisomies are those where an extra sex chromosome is evidenced

§ Klinefelter syndrome, XXY

§ Triple X syndrome, XXX (Called super female syndrome)

§ Double Y syndrome, XYY (called superman syndrome)

· Sexual monosomies: Cells that have lost a sex chromosome

§ Turner syndrome, XO

· Sex polysomies:

§ XXXY

§ XXXX

§ Other