What would happen if the chromosome number were not reduced before sexual reproduction?

Question

PLEASE HELP ME! this is an essay question on my bio take home test...PLEASE! IM SOO LOST!!!

Answer 1

The chromosome number is reduced during meiosis, such that each gamete has only one copy of each chromosome. That way, when gametes come together (fertilization), the resulting zygote has two copies of each chromosome (like its parents). If the chromosome number were not ever reduced, then each generation would have twice as many chromosomes as the one before. The number of specific chromosomes in an organism is called "n." Most organisms have two copies of each chromosome, which is "2n." If the gametes did not reduce from 2n to n during meisos (that is, before sexual reproduction), then fertilization would result in 2n + 2n = 4n. The following generation, fertilization would give 4n + 4n = 8n, and so on.

Answer 2

that would be a tragic event. remember that during fertilization, the sperm and the egg joins together which includes the genetic material of both sex cells. for example, in humans the chromosome number is 46. during sex cell production, iot is reduced to 23 such that when the egg and sperm meet, they form a cell with 46 chromosomes. if it is not reduced, then the offspring would have 46 + 46 chromosomes or 92. and the offspring of this second generation will have a higher chromosome number. and if that is the case, we won't be sure of what the offspring will look like or be like.

Answer 3

You stated unreduced chromosome variety (ploidy point). not approximately person chromosome (non-disdjunction; uneupoplyploidy). In flowers, this phenomenon isn't uncommon. Many flowers can prodice unreduced pollens and eggs by using what's so talked approximately as first branch restitution (FDR) throughout meiosis I and 2d branch restitution (SDR) throughout meiosis II. the two FDR and SDR produce diploid (2n) gametes. whilst unreduced pollen (2n) fertilize unreduced egg (2n) then a tetraploid zygote (4n) would be produced. Diploid potato (Solanum phureja), for occasion, produce severe frequency of unreduced gametes. Potato breeding courses are commonly carried out in diploid point to realize the needed features; and then using unreduced gametes the traditional tetraploid potato (4n=forty 8) could be produced lower back. besides, some scientists have self assurance that the formation of polyploid flowers in nature became additionally by using those mechanisms.

Answer 4

You should Google 'polyploidy' to get a start. You can also check out 'chromosomal abnormalities'. This will give you the info you need.

Answer 5

I think the child is born with a genetic disorder such as Down Syndrome, etc.

Answer 6

do yur own hw