All of the following statements about population distribution are true EXCEPT
A. population distribution is the pattern of dispersal of individuals across an area of interest.
B. a population's distribution is calculated as the number of individuals per unit area.
C. environmental conditions, such as climate and altitude, are often limiting factors of distribution.
D. behavioral traits, such as territoriality, can affect the distribution pattern of a population.
Answer: B
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A. Tetracycline B. Erythromycin C. Streptomycin D. Penicillin E. All of the choices inhibit protein synthesis.
The lancelet pharynx functions in _____
a. respiration c. reproduction b. filter-feeding d. both respiration and filter-feeding
Postzygotic isolation barriers prevent
A. a hybrid embryo from developing into a fertile adult. B. fertilization. C. male gametes from joining with female gametes. D. All answers are correct. E. formation of gametes by one of the parents.
In the study of Gigord and colleagues using Elderflower orchids, the allele frequencies of yellow and purple flowers varied such that when the yellow allele started to become rare, the reproductive success of purple flowers decreased and the
reproductive success of yellow-flowered individuals increased in a process known as ________. A) overdominance B) frequency-dependent selection C) underdominance D) Hardy-Weinberg stabilization E) frequency depression