Genetics will change in each generation depends on who the mother/father has offsprings with, they kids will get genetics from both parents and that creates a new set of genetics for their offspring
Answer: Friction
Explanation: Sir Isaac Newton, a soccer ball on the grass will stay where it is unless acted on by a force.
I believe the answer is chromosomes.
Chromosomes are basically coiled up pieces of DNA with proteins.
I hope this helps! If it doesn't, please reply.