In the Hardy-Weinberg equation, 2pq refers to
A) the proportion of heterozygotes in a population.
B) the number of homozygous dominant individuals in a population.
C) the most common phenotype in a population.
D) individuals who are homozygous recessive.
A) the proportion of heterozygotes in a population.
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If a cell has the same concentration of dissolved molecules as its outside environment, the cell's condition is referred to as being
A. isotonic. B. hypertonic. C. hypotonic. D. hydrophobic. E. hydrophilic.
Which marine zone is one of the most stressful habitats on Earth?
a. the pelagic province b. the continental shelf c. deep sea trenches d. the abyssal zone e. the intertidal zone
What term describes behavior that enhances the reproductive success of another member of the same species at the expense of the helpful individual?
a. altruism b. genetic fitness c. social defense d. selfish herd e. natural selection
________ are hormones that act locally, affecting neighboring cells.
A. Prostaglandins B. Oxytocin C. Insulin D. Pheromones E. Oxytocin and pheromones are both correct.