Natural selection will never favor those members of a population that have an extreme variation of a trait.

All the internal structures are suspended (floating) in what substance

What carries nerve impulses across the gap between two nerve cells?

Why do you think the motor and somatosensory cortices are located adjacent to one another?

What do tertiary consumers feed on to obtain energy?

As material moves through the large intestine, in what order does it pass through these structures?

What is a common ancestry and divergence

A complex carbohydrate that can be formed by the linking of simple sugar is

How is the brain able to differentiate between each sensory modality? A The action potentials, sent along the same nerve tracts, get sorted by the thalamus B The action potentials for each sense are sent along separate nerve tracts.

Nearly all cells in an organism contain identical DNA, and each DNA strand may contain hunndreds or thousands of individual genes. Is it likely that a cell would transcribe all the genes within its nucleus simultaneously. A. True B. False

Which of the following is true regarding brain development and aging? a. Blood flow is increased in the brain. b. The brain uses more oxygen. c. The brain becomes smaller and lighter. d.