Answer:
Mutations are essential for evolution to occur because they increase genetic variation and the potential for individuals to differ. The majority of mutations are neutral in their effects on the organisms in which they occur. Beneficial mutations may become more common through natural selection.
D identical cells for your q
Answer:
1. nucleus
2. They contain half of the genetic material of the parent
3. The offspring receive half of their genetic information from one parent
I hope this is right