Which Was Not in the Human Lineage

question 27

Multiple Choice

Which was not in the human lineage?

• A) ray-finned fish
• B) amphibians
• C) tetrapods
• D) amniotes

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Definitions:

Complementary Base Pairing

The specific pairing of base pairs in DNA or RNA where adenine pairs with thymine (or uracil in RNA) and cytosine pairs with guanine.

Adenine

A purine nucleobase used in the formation of DNA and RNA, involved in coding genetic information and energy transfer.

Thymine

One of the four nucleobases in the DNA of cells, which pairs with adenine.

Adenine Bases

One of the four nucleotide bases found in DNA and RNA, which pairs with thymine in DNA and with uracil in RNA.