Name 2 sources of variation produced during meiosis.

Are there any factors that can cause an increase in the risk of developing an error in the meiotic division; if so, what are they? The duplication or depletion of a chromosome carries various health risks; what error in the chromosomes would be least harmful and what would be the most harmful for the zygote?

Caspar's genotype is HhRr.  These genes are located on the same chromosome,  so the haplotype is: H  R h   r   For this problem, there is no recombination between the genes. Knowing this, draw for yourself how these chromosomes should align and separate during meiosis.  Now, from the choices below, which gamete would represents a nondisjunction event in meiosis II?   hr HhRr Hhr HHRR

Draw the chromosomes of each daughter cell after Meiosis II:

List and describe the phases of meiosis.