You observe several populations of a species of wildflower in your county. Even though the climate is nearly identical in all three places, each population has distinct traits. What's the most likely cause of change when habitat is similar?
A) a chance event in each population as the original population spread
B) founder effect in each population as the original population spread
C) sexual selection acting on each population
D) independent mutations arising in each population
B
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For human races to be considered valid biological groupings, the genetic diversity within the group would have to be _________ the genetic diversity between groups.
A. lower than B. equal to C. higher than Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about human races? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which type of bonds hold the two chains of DNA together in a DNA molecule?
a. hydrogen b. polar covalent c. nonpolar covalent d. ionic e. peptide
The most common sign of Hairy Cell Leukemia is "hairy" _____.
Fill in the blank(s) with the appropriate word(s).
If you remove mountain lions from their habitat and the diversity of other species decreases, the mountain lion was likely a
A. predator. B. commensal species. C. carnivore. D. prey. E. producer.