What sensory receptors sense stimuli that arise from within the body?
A. gustatory receptors
B. photoreceptors
C. interoreceptors
D. ampullae of Lorenzini
E. exteroreceptors
C. interoreceptors
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____ is a special form of selection that works on reproductive ability, even if the traits selected for limit the organism's chance of survival
Fill in the blank with the appropriate word.
Which of the following are used to distinguish species from one another?
A. differences in the physical characteristics of organisms B. differences in behavior C. differences in metabolism D. All of the choices are correct.
Human females with XY chromosomes and a phenotype that includes the absence of a uterus and ovaries and the presence of testes are likely to have which of the following mutations?
A. a deletion that removes much of the Y chromosome B. a defect in a gene involved in X inactivation C. a mutation in the androgen receptor gene D. They likely do not carry a mutation but may have been premature babies. E. a mutation in the SRY gene
During which of the following times in development are teratogens most effective?
A. Blastocyst Stage B. Embryonic Period C. Fetal Period D. Gastrulation E. Two-Cell Stage