Answer:
The addition of an extra chromosome usually occurs spontaneously during conception. The cause of this is unknown and prevention is not possible. The most important risk factor for trisomy conditions is maternal age. Women in their late 30s and 40s have a higher chance of trisomy conditions occurring.
She has the greatest chances of conceiving about halfway through her menstrual cycle, or at the 14 day mark.
D. The offspring in the second population will have greater genetic variety
This is because since these mice have never reproduced together before, the different genes will reproduce, introducing new genetic variety into the population.
The examination or observation of one's own mental and emotional processes.
"quiet introspection can be extremely valuable"