The phenotype is the expression of the genotype.
a. true
b. false
Ans: a. true
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When a male lion competes with another male for mating rights in a pride, this is an example of _________________. When a lion pride competes with hyenas for food sources in a habitat, this is an example of ________________
Both can affect the size of the lion population. A. intraspecific competition; interspecific competition B. interspecific competition; intraspecific competition C. contraspecific competition; intraspecific competition D. intraspecific competition; contraspecific competition E. interspecific competition; contraspecific competition F. contraspecific competition; interspecific competition
If a scientist is conducting a study of how a male bird's song and the female bird's response evolved, what type of causation is she exploring?
A. ultimate causation B. proximate causation C. stereotyped causation D. ethnological causation E. fixed action pattern causation
The masseter muscles originate on your cheekbones and insert into the posterior corners of the mandible (the lower jaw bone) underneath your ears. Will contraction of the masseter muscles open or close your jaw?
A. Close B. Open
Toxoplasma gondii infects the brain, as do many other pathogens. However, Toxoplasma differs from other pathogens in that it
A. causes tumor formation in the brain. B. manifests in behavioral changes in the host. C. causes destruction of brain tissue. D. always kills the host.