Answer is option a that is The material is hotter and denser.
Homozygous would be BB and heterozygous would be Bb.
Knowing this we can put the info into a punnet square (pic is attached of mine)
As a result we see only half of them would be homozygous dominant, and half of 200 is 100.
So, the answer is C. 100
I hope that helps u!!
A Gully, I looked it up on 4 websites and they all said a gully...
If that helps, you welcome...
Bye...