Briefly explain how the existence of aneuploidies has
geneticists assess the genetic basis for sex determination in
humans. and locate genes on specific chromosomes.

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

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

§

§ Other

currents is the correct answer.

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!