Why are human behaviors so difficult to study? What will be an ideal response?


ANSWER: The vast majority of human behaviors are polygenic, which means there are many genes
controlling them. As a result, it is very difficult to look at one particular gene and observe a
clear explanation of a trait. In addition, human traits are very much influenced by
environment, so having certain genes may not produce certain behaviors.

Biology & Microbiology

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Four of the five answers are examples of somatic senses. Select the exception

a. internal organ pain b. pain near the body surface c. temperature d. touch e. pressure

Biology & Microbiology

The last structure that air moves through in

mammals before entering the alveoli is(are) the a. larynx. b. bronchi. c. bronchioles. d. trachea. e. pharynx

Biology & Microbiology

What happens quite often to the number of normal receptors in the plasma membranes of malignant cells as compared to normal cells?

a) Malignant cells usually have a much smaller number of plasma membrane receptors than normal cells. b) Malignant cells usually have the same number of receptors in their plasma membranes as normal cells. c) Malignant cells usually have no plasma membrane receptors, while normal cells have them. d) Malignant cells usually have a much larger number of plasma membrane receptors than normal cells. e) None of the choices is correct.

Biology & Microbiology

Which of the following correctly describes the path taken by excretory fluid through the mammalian kidney?

A. glomerulus, capsule, renal tubules, collecting ducts, ureter, bladder B. capsule, glomerulus, collecting ducts, renal tubules, ureter, bladder C. glomerulus, capsule, collecting ducts, renal tubules, ureter, bladder D. collecting ducts, glomerulus, capsule, renal tubules, ureter, bladder E. capsule, glomerulus, renal tubules, ureter, collecting ducts, bladder

Biology & Microbiology