B I think is the right answer:)
Answer:
If a child has an autosomal dominant trait, then at least one parent has the autosomal dominant trait. If both parents have an autosomal dominant trait, then all of their children will have that trait. If both parents have an autosomal recessive trait, then all of their children will have that trait.
I think that the answer is called fertilization
Cross bridges are created when myosin heads bind to (actin).