Two Mechanisms Are Believed to Be Responsible for the Evolution

question 151

Multiple Choice

Two mechanisms are believed to be responsible for the evolution of the human brain.They are:

• A) genetic mutation and natural selection
• B) genetic mutation and mitosis
• C) genetic codominance and incomplete dominance
• D) natural selection and recessive genes

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Definitions:

Volume

A measurement of the amount of space occupied by a three-dimensional object or substance.

Concrete Operational

A stage in Piaget's theory of cognitive development where children aged about 7 to 11 years can perform various mental operations using concrete objects.

Sensorimotor

Pertaining to the body's responses to sensory stimuli and the coordination of sensory and motor activities.

Conservation

The principle that certain physical characteristics (such as volume, mass, or number) remain unchanged, even when their appearance changes, as understood in cognitive development.