Select the example of genetics.
A) Studying how various members of a royal family are related
B) Studying the shape and size of dinosaur fossils
C) Studying how a disease gene is transmitted within a royal family
D) Studying how the different organelles in a cell work
C) Studying how a disease gene is transmitted within a royal family
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The drug mifepristone (RU-486) is a contraceptive that
a. blocks passage of sperm through the male reproductive tract. b. blocks passage of sperm through the female reproductive tract. c. prevents ovulation. d. causes shedding of the endometrial lining and the implanted embryo by initiating a menstrual period. e. prevents implantation by blocking estrogen receptors in the uterus.
A common respiratory problem in the elderly or morbidly obese is
a. asthma. b. sleep apnea. c. bronchitis. d. bronchiolitis. e. the common cold.
Animals remove ________ from organic molecules, which drives the synthesis of ________.
A. electrons; ATP B. carbon; ATP C. electrons; CO2 D. nitrogen; H2O E. protons; O2
Identify the labeled muscles in the picture. 
What will be an ideal response?