Which statement best supports the RNA world hypothesis?

What are some possible short and long term medical concerns for crew members on longer space exploration trips

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.

During binary fission, what events must occur before the cell splits into two new cells?