Where does normal fertilization of an egg by a sperm in a human female occur?
A. at the ovary upon ovulation
B. in the uterus after the egg has implanted
C. in the uterus before the egg has implanted
D. near the cervix before the egg leaves the female
E. in the Fallopian tube
E. in the Fallopian tube
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The bones and cartilage in animals serve the same function as ________ in plants?
A. xylem B. leaves C. wood D. capillaries E. phloem
During which stage of the cell cycle would a cell contain the least total amount of DNA? What will be an ideal response?
The most important evidence that Darwin used to develop his theory of natural selection came from ____
a. the Argentine pampas b. his boyhood neighborhood in England c. the Galápagos Islands d. Australia and New Zealand
e. South AmericaPopulations that experience significant contest competition:a
show small changes in population size over time. b. show great changes in population size over time. c. are particularly susceptible to extinction. d. show little intraspecific competition. e. are characteristic of environments with abundant resources.