The "grandmother hypothesis" suggests that natural selection may have favored a woman ________
A) moving away from her children and grandchildren
B) focusing her energy on caring for her grandchildren, instead of producing more children
C) focusing her energy on the production of as many children as possible before reaching menopause
D) helping her sisters produce more children
B
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Mumps is caused by a ________.
A. adenovirus B. paramyxovirus C. morbillis virus D. synctial virus
Which subatomic particle has no charge (i.e., is neutral)?
a. proton b. neutron c. electron d. all subatomic particles have charges
Why has Martin Pollak used humans in his studies of kidney disorders?
a. ability to do invasive experiments d. examination of renal phenotypes followed by genetic analysis b. ability to carry out planned matings e. examination of renal genotypes followed by genetic manipulation c. long generation time
Which of the following bacterial cell structures plays an important role in the creation of biofilms?
A) glycocalyces B) flagella C) fimbriae D) pili E) both fimbriae and glycocalyces