SO IT WOULD BE 50 PERCENT RIGHT IF THEY BOTH ARE DOMINATE AND THEY BREED TOGETHER THEN IT WOULD BE 50 50
A. Earth does have a bigger gravitational pull because Planet Earth is huge and it needs and has all the gravity.
The answer would be b. Crossing over simply creates a higher amount of genetic variation within the daughter cell which is advantageous to sexually reproducing organisms.
It will get lower since the pressure around the barometer gets lower
I would go with false, because not only 100,000 genes, there are lots to those. and there are not even like 100,000 genes, that is not really possible!!
hope that this helps you! =)