Below is a list of phenomenon that can occur in a population, which of these would violate the conditions for the Hardy-Weinberg equation?
A. The population is large.
B. Mating is nonrandom.
C. Migration does not occur between different populations.
D. Natural selection is not occurring.
E. No new mutations arise.
B. Mating is nonrandom.
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Which of the following statements regarding altitude and climate are true?
I) Species composition on different sides of a mountain range are often different from each other. II) Rain shadows may appear on one side of a mountain range. III) The higher the altitude, the warmer the climate. IV) Both sides of a mountain range generally receive equal amounts of precipitation. A) only I and II B) only III and IV C) only I, II, and IV D) only II, III, and IV E) only I, II, and III
Forms of the Ras protein found in tumors usually cause which of the following?
A) DNA replication to stop B) DNA replication to be hyperactive C) cell-to-cell adhesion to be nonfunctional D) cell division to cease E) excessive cell division
Which of the following is NOT a function of slimy mucilage in microbes?
A. protects against the host's immune system B. binds nutrients C. serves as a flotation device D. prevents desiccation (drying out) E. protects against ultraviolet radiation
How is codominance expressed in an organism?
A) Both of the alleles in a heterozygote are expressed phenotypically in an individual. B) Expression of two different alleles alternates from one generation to the next. C) A heterozygote expresses an intermediate phenotype. D) Offspring exhibit several different phenotypic expressions of a single trait.