Answer:
If chromosomes fail to separate correctly during meiosis, the result can be that the chromosomes of the sex cell are doubled.
During meiosis, the chromosomes in a cell are duplicated and then divided into four gametes, or reproductive cells, each with half the number of chromosomes of the original cell. This is important because it allows for genetic diversity among the offspring.
However, if the chromosomes fail to separate correctly, this can result in one gamete receiving both copies of a particular chromosome, while another gamete receives no copies of that chromosome. This would result in the gametes having an abnormal number of chromosomes, with some having too many and others having too few.
If these gametes were to combine during fertilization, the resulting organism would have an abnormal number of chromosomes, which can lead to various genetic disorders and developmental abnormalities. This is why the proper separation of chromosomes during meiosis is essential for the healthy development of an organism.