It Has Been Speculated That Because the Two Halves of the Homo

question 35

Multiple Choice

It has been speculated that because the two halves of the Homo erectus cranium differ, their brains were asymmetrical, and individuals of this species:

• A) could speak
• B) used their jaws as a "third hand"
• C) invariably died young
• D) often suffered neck injuries, probably as a result of their reliance on hunting

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Definitions:

Genetically Determined

Traits or characteristics that are directly influenced by an individual's genetic makeup.

Genetic-Environment Correlation

The concept that exposure to environmental conditions depends in part on an individual's genotype, influencing their development and traits.

Sperm Cell

A male reproductive cell or gamete involved in sexual reproduction, capable of fertilizing an ovum.

Ova

The female reproductive cells or eggs in animals and plants, which when fertilized by male sperm can develop into a new organism.