Which of the following statements is not true regarding scientists' theories about early life on Earth?

A. Primitive cells were called protocells.
B. The fossil record tells scientists when life began on Earth.
C. RNA "gene" sequences were replaced with DNA.
D. The fossil record tells scientists how life began on Earth.

Question

16-07-2024
Biology

Answered

Which of the following statements is not true regarding scientists' theories about early life on Earth?

A. Primitive cells were called protocells.
B. The fossil record tells scientists when life began on Earth.
C. RNA "gene" sequences were replaced with DNA.
D. The fossil record tells scientists how life began on Earth.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-16T18:03:39-04:00

Final answer:

The fossil record informs about ancient life forms but not the exact start of life on Earth. Protocells were early cells called protocells, and genetic material transitioned from ORNA to DNA.

Explanation:

The fossil record tells scientists when life began on Earth is not true regarding scientists' theories about early life on Earth. The fossil record gives insight into the existence of ancient life forms but does not pinpoint the exact moment life started. It provides evidence of the progression of life forms over time rather than a specific starting point.

Primitive cells were called protocells is accurate since early cells were indeed referred to as protocells. These protocells were simple structures that eventually evolved into more complex organisms.

ORNA 'gene' sequences were replaced with DNA is true because as life evolved, genetic material transitioned from ORNA to DNA, a crucial development in the history of life on Earth.

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