The more asymmetric the parental investment is between the sexes:
a. the more radical we expect the sexual dimorphism to be, both physically and behaviorally.
b. the more likely it is that a population's mating system is monogamy.
c. the more likely it is that the species in question is a bird species.
d. the more likely it is that the individuals of the population are long-lived.
e. a) and c) are both true.
Ans: a. the more radical we expect the sexual dimorphism to be, both physically and behaviorally.
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Successive nucleotides of a DNA chain are joined by:
A. phosphodiester bonds between the 5' carbon of one nucleotide and the 2' carbon of the next. B. glycosidic bonds between the 5' carbon of one nucleotide and the 3' carbon of the next. C. hydrogen bonds between the complementary bases. D. ionic bonds between the phosphate group of one nucleotide and the sugar group of the next. E. phosphodiester bonds between the 3' carbon of one nucleotide and the 5' carbon of the next.
Kinetic energy can be described as energy in motion. Which of the following is not an example of kinetic energy?
A. random molecular movement B. light C. heat D. the energy in chemical bonds E. sound
The ability of rats to cope with stress as adults can be affected by ____
a. a nurturing mother b. the number of siblings they have c. the temperature they are raised in d. the altitude they are born at e. their sex
Classification is an important aspect of understanding and describing the many life forms on earth. In their classification scheme, biologists use different "ranks" that are more or less inclusive. Which of the following correctly lists these ranks from most to least inclusive?
A. phylum; class; genus; family; species B. kingdom; order; class; genus; species C. class; order; family; genus; species D. kingdom; domain; family; genus; species