Which of the following statements is true concerning LUCA?

1. LUCA was a cell.
2. All life on Earth evolved from LUCA.
3. LUCA probably existed around 4.5 billion years ago.

a. 1 only
b. 2 only
c. 1 and 2
d. 1, 2, and 3

I'm guessing you meant b. 2 and 3 :)
If that was the case, then the answer is b.
I hope this helped.

Answered by TacoGod | 2024-06-10

2 and three. LUCA was an organism

Answered by MimiWal | 2024-06-10

LUCA was a cellular organism and the common ancestor of all life on Earth, but it did not exist 4.5 billion years ago; rather, it likely appeared around 3.5 billion years ago. Thus, statements 1 and 2 are true, while statement 3 is not. The correct answer is c. 1 and 2.
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Answered by TacoGod | 2024-12-23