Two Early Humans Go Hunting for Food

question 347

Multiple Choice

Two early humans go hunting for food. They have comparable intelligence. Brawn is strong and fast; Timorous is scrawny and easily tired by vigorous exercise. The men are attacked by a panther. They both run, but Timorous lags behind and is killed by the panther. The panther then chases and overcomes Brawn, who manages to fight off the panther and escape. Brawn passes his strength and speed on to many children; Timorous had only one child before he died. What process is responsible for Brawn's having more offspring than Timorous?

• A)natural selection
• B)behavioural neuroscience
• C)humanism
• D)social constructivism
• E)a self-fulfilling prophecy

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Definitions:

Buta-1,3-diene

A conjugated diene with the formula C4H6, characterized by having double bonds at the first and third positions of a four carbon chain.

But-1-ene

A linear four-carbon alkene with a double bond between the first and second carbon atoms, with the formula C4H8.

Dehydrogenation

A chemical reaction that involves the removal of hydrogen from a molecule, often making unsaturated bonds.

∆G°

The standard change in Gibbs free energy for a process, indicating whether a reaction is thermodynamically favorable under standard conditions.