If one pair of genes could cause some flowers to have red petals or yellow petals and could also determine the strength of the stem, this would be an example of
A. polygenic inheritance.
B. pleiotropy.
C. recessiveness.
D. hybrid.
B. pleiotropy.
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What is the function of antidiuretic hormone (ADH) in the body?
a. During times of increased solute concentrations, ADH causes nephrons to absorb water faster. b. During times of higher solute concentrations, ADH causes more water to be released from the nephrons to be reabsorbed by the blood. c. Low levels or the absence of ADH in the blood are the brain's response to thirst. d. ADH is the only hormone that provides a system of control over the kidney as an osmoregulator for urine production. e. ADH controls the rate that filtrate moves from the glomerulus into Bowman's capsule.
The term aerobic means:
A) ATP-dependent. B) oxygen-independent. C) oxygen-dependent. D) carbon dioxide-dependent.
Which of the following is the CORRECT sequence of a disease process?
A. convalescence, incubation, prodromal period, illness, decline B. prodromal period, convalescence, incubation, illness, decline C. incubation, convalescence, prodromal period, illness, decline D. incubation, prodromal period, illness, decline, convalescence E. illness, convalescence, incubation, prodromal period, decline
In the golden-winged sunbird (Nectarina reichenowi), defending a territory saved the bird 780 calories a day in reduced foraging activity, but cost the bird 728 calories in defense of the territory. The net change in calories due to territorial behavior was
A. 53 B. 1,508 C. -53 (no gain) D. 52 E. -52 (no gain)