If the Neandertals Are Not the Direct Ancestors of Humans

question 16

Multiple Choice

If the Neandertals are not the direct ancestors of humans, is it still possible for humans and Neandertals to be related?

• A)Yes, because we share a common ancestor.
• B)Yes, but only if humans and Neandertals could have interbred.
• C)No, because the human evolutionary tree is strictly linear and without branches.
• D)No, because this means that Neandertals evolved from an entirely different branch of organisms than humans did.

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Definitions:

Cytotoxic Cells

Immune cells that can kill cancer cells or cells infected with viruses by inducing apoptosis.

CD8

A protein found on the surface of T cells, involved in the immune response by identifying and attacking infected or cancerous cells.

Progenitor

An ancestor or parent from which descendants or offspring arise.

Plasma Cell

A type of white blood cell that produces and secretes large volumes of antibodies, playing a crucial role in the immune response.