Polydactyly is an example of a trait that is both ___________ and variably expressive

A) completely penetrant B) incompletely penetrant
C) pleiotropic D) multifactorial


B

Anatomy & Physiology

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All of the following can contribute to receptor specificity except

A) the structure of the receptor cell. B) characteristics of the receptor cell membrane. C) accessory cells that function with the receptor. D) accessory structures and tissues that shield the receptors from other stimuli. E) density of the receptors.

Anatomy & Physiology

The "heart" can actually be classified as a hormone-producing structure.

a. true b. false

Anatomy & Physiology

At sea level, atmospheric PO2 is about 760 mmHg

Indicate whether the statement is true or false.

Anatomy & Physiology

Red blood cells, or ____________________, are biconcave, disc-shaped cells.?

Fill in the blank(s) with correct word

Anatomy & Physiology