Answer:
Where do they occur: infected blood, semen or vaginal secretions in your body
How do they start: mainly by having s3x
How do they spread: either by s3x or injection drug use
How deadly are they: takes about 10 years for an injection to develop aids so idk a long time I guess? Just say very deadly
Is there a vaccine: not yet but people are working on some
Explanation:
Microscope to focus on a specimen identify one safety issue to consider
The right answer is A.) nondisjunction
Non-disjunction is an absence of separation of two members of a pair of homologous chromosomes or chromatids from a chromosome during meiosis or mitosis, resulting in one of the daughter cells having two copies of the same chromosome or chromatids and the other daughter cell receives none.
