If the environmental situation changes is it possible for a population to be restored?

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

What class of levers is shown in this image?

The table above shows five different types of chromosomal abnormalities that can occur during meiosis. they result in either an individual having too many or too few chromosomes in their genome. what is the most likely cause of these chromosomal abnormalities?