Annelids possess all of the following except
A. muscles to swim, crawl, and burrow.
B. ganglia to respond to light and respond to other environmental cues.
C. circulatory, excretory, and neural elements in each segment.
D. setae in each segment.
E. adductor muscles.
E. adductor muscles.
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All of the following are ways we account for the disconnect between levels of complexity and gene number between organisms EXCEPT:
A. All of the answer options are reasons for the disconnect between complex and less complex organisms. B. different gene products are made in different amounts. C. proteins are capable of combining in many different ways to perform different functions. D. a single gene may yield different proteins due to alternative splicing. E. None of the answer options is correct.
The first day of the menstrual cycle is marked
by
a. the beginning of ovulation. b. the onset of PMS. c. the beginning of menstruation. d. an increase in the thickness of the uterine lining. e. the beginning of the luteal phase
Indoleacetic acid (IAA) is the most commonly occurring form of which of the following plant hormones?
A. abscisic acid B. gibberellin C. cytokinin D. auxin E. ethylene
Primates need to groom their fur for parasites. Grooming can be either done cooperatively by another indi-vidual or individuals can groom themselves
Grooming oneself requires more time and energy than grooming another individual. What corresponds in this system to the following elements of the prisoner's dilemma? P = Punishment for mutual defection: R = Reward for mutual cooperation: S = "Sucker's" payoff: T = Temptation to defect: What will be an ideal response?