Why aren’t there many fossil jellyfish?

There aren't many jellyfish fossils because they are made of soft tissues and they dont hve and bones hope this helps.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

hope this : )