Answer:
Homozygous
Explanation:
Homo - Same/ zygous - same alleles
Because they don't have a or any cells and have no DNA
The answer that is not caused by a gravitational pull is two atoms come together to form a molecule because atoms form molecules because of the electrons, and not gravitational pull.
Therefore the correct answer would be,
Two atoms come together to form a molecule.
I hope that this has satisfied you.
The Retina has the light sensitive cones (and lack of color sensitive cones can also result in color blindness)