Question

Why do some scientists believe that RNA, rather than DNA, was the first genetic material?

RNA can replicate more accurately than DNA.
RNA contains uracil in place of thymine.
All of the protocells on early Earth contained RNA.
RNA has both information storage and catalytic properties.

Answer 1

The correct answer as to why some scientists believe that RNA, rather than DNA, was the first genetic material would be that RNA has both information storage and catalytic properties.

Other options are cannot be correct because:

• RNA cannot replicate itself unless it is in a living host.
• RNA containing Uracil instead of Thymine has no effect on being the first genetic material or otherwise.
• There is no clear evidence to show that all of the protocells on early Earth contained RNA

The fact that RNA has the capacity to store information as well as catalyze important biological processes made it a plausible candidate as the first genetic material. DNA has the capacity to store information but lacks catalytic properties, unlike RNA.

More about the first genetic materials here: https://brainly.com/question/8322718

Answer 2

Answer:

D

Explanation: