A population of salamanders consisting of 2150 individuals will lose genetic diversity due to genetic drift at _______ the rate of a population consisting of 250 individuals.
A. five times
B. ten times
C. one tenth
D. twice
E. one hundredth
C. one tenth
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A scientist performs an experiment in which they create an artificial cell with a selectively permeable membrane through which only water can pass. They inject a 5M solution of glucose into the cell and then place the cell into a beaker containing 10M glucose. What effect do you expect to observe?
A. Water moves out of the cell B. Glucose moves out of the cell C. No net change in cell weight D. Water moves into the cell E. Glucose moves into the cell
Which of the following is an example of a ball-and-socket joint in the human body?
A. shoulder and hip B. shoulder C. hip D. elbow E. knee
Genes that tend to be inherited together are said to be:
a. associated. b. related. c. similar. d. linked. e. alleles.
Competition among members of the same species is known as ___________.
Fill in the blank(s) with the appropriate word(s).