Nondisjunction is a disorder where a single chromosome doesn…

Nondisjunction is a disorder where a single chromosome doesn’t split during the anaphase stage of mitosis and meiosis. If I were to observe the elephant genome, I would see a total of 56 chromosomes line up during metaphase. If a single nondisjunction event were to occur during anaphase II, what would the expected chromosome counts be in the four haploid cells?

In a different set of experiments, you identify two kinds of…

In a different set of experiments, you identify two kinds of mutations in S. aureus. The first type of mutation makes the bacteria more susceptible to antibiotic X; the second type of mutation makes it more resistant to antibiotic X. In the absence of the antibiotic, which mutant would you expect to be more abundant?