Question

Which hypothesis helps to explain why all organisms share the same genetic code? (4 points)

a
Early Earth had an abundance of volcanoes and lacked an ozone layer.

b
Deep-sea vents provided the energy needed for the first organic compounds to form.

c
Microspheres divided and share common characteristics with present-day cells.

d
Self-replicating RNA molecules passed on genetic information.

Answer 1

Answer:

d.self replicating RNA molecules passed on same genetic code

Answer 2

Answer:

If RNA is able to self-catalyze, this means that early RNA molecules may have been able to self-replicate without the help of other molecules. If early RNA molecules were able to copy themselves to build new RNA molecules, this helps to explain why all organisms share the same genetic code.