The single most preventable cause of disease in the United States is:
a. alcohol use.
b. tobacco use.
c. automobile accidents.
d. suicide.
e. homicide.
B
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A volcanic eruption carves the island into two populations (A1 and A2, 50,000 individuals each). The rodents cannot cross the lava even when it has cooled
Immediately after the eruption you take 100 individuals from each of populations A1 and A2, and sequence the same 100 base-pair gene region in the mitochondrial DNA (mtDNA) of each individual. You are shown a DNA sequence chosen at random from the total pool of 200 sequences; can you tell which population, A1 or A2, it comes from? A. yes B. no
Which of the following hormones stimulates uterine contractions during the birth process in mammals?
A. oxytocin B. testosterone C. FHS D. chorionic gonadotropin E. LH
Both plant and animal cells have all the following structures EXCEPT
a. a cell membrane. b. a nucleus. c. mitochondria. d. chloroplasts.
Do you agree with geneticists that there is no genetic basis to divide humans into races? Why or why not?