Mitochondrial diseases ________
A) are very rare; only a couple of people are diagnosed per year
B) are caused only by spontaneous mitochondrial DNA mutations
C) cannot be inherited from the mother
D) None of the above is true.
D
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If you share 99% of your nucleotide sequence with a chimpanzee and only 50% of your alleles with your own daughter, why aren't you more closely related to the chimpanzee than your own daughter?
What will be an ideal response?
Abscisic acid is an important signal, transported from roots to the stem and leaves during times of water stress, that prevents:
A. additional auxin production B. ethylene buildup in the stems C. leaf drop D. phototropism E. stomatal opening
Which of the following is NOT related to the
study of population demographics?
a. in a lake, there are 5 rainbow trout per 50 square meters b. in Yellowstone National Park, there are approximately 3,000 American bison c. African wild dogs live in packs distinct from each other and scattered through the savanna d. cheetahs are most successful at catching gazelles e. cacti grow in the desert more or less evenly spaced from each other
What does the term theory mean to a scientist?
A) A guess B) A proposed explanation for an observed phenomenon C) A hypothesis that has been supported by the evidence of an experiment D) A broad hypothesis that has been supported by a large number of experiments