Which of the following is the pattern of spacing for individuals within the boundaries of the population?
A) cohort
B) dispersion
C) Allee effect
D) iteroparous
E) semelparous
Ans: B) dispersion
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a. nonsister chromatids of a pair of homologous chromosomes b. sister chromatids of a pair of homologous chromosomes c. nonsister chromatids of a pair of non-homologous chromosomes d. sister chromatids of a pair of non-homologous chromosomes
The molluscs:
a. do not have a larvae stage. b. lack a digestive system. c. have bodies divided into segments. d. possess a soft body covered with a mantle. e. make a chitinous shell.
Stan, a champion athlete, sleeps up in the mountains at 10,000 feet every night to increase his red blood cell count for better athletic performance. Which hormone increases to make that possible?
A) hemoglobin B) erythropoietin C) Rh factor D) fibrin
Which of the following is the cause of the STD known as lymphogranuloma venereum?
A. Neisseria gonorrhoeae B. Haemophilus ducreyi C. Chlamydia trachomatis D. Treponema pallidum E. Chlamydophila psittaci