There are advantages and disadvantages to adaptations. Animals that are endothermic are likely to be at the greatest disadvantage in _____
A) very cold environments
B) very hot environments
C) environments with a constant food source
D) environments with variable and limited food sources
D
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The growth hormone is called
a. prolactin. b. adrenalin. c. thyroxine. d. ACTH. e. somatotropin.
How many pairs of autosomes are in a typical human karyotype?
A. 8 B. 22 C. 23 D. 46 E. 92
Multicellular gameotophytes are the product of spores from
A) anthers and stigmas. B) ovules and anthers. C) stigmas and sepals. D) ovules and petals.
Imagine that a new population of humans is established on a new planet from ten randomly selected people in your biology class. Over thousands of years, the descendants of those ten people reproduce and prosper, but do not reflect well the diversity of humans of Earth. This change in the diversity of people on the new planet is an example of _____________.
A. gene flow B. genetic drift C. the bottleneck effect D. the founder effect