Answer:
. A DNA molecule in a human chromosome can be up to 250 million nucleotide-pairs long; in contrast, most RNAs are no more than a few thousand nucleotides long, and many are considerably shorter.
Your answer is, The Devonian Period.
The first major groups of amphibians ("stem") developed in the Devonian period, around 370 million years ago, from lobe-finned fish which were similar to the modern coelacanth and lungfish.
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DNA, because it tells the (ribosomes) how to make proteins.
Answer:
Primates with opposable thumbs include great apes -- chimpanzees, bonobos, orangutans and gorillas -- and Old World monkeys like baboons and Colobus monkeys.
Explanation: