The Hardy-Weinberg law is based on the assumptions that no genotype is superior to any other and
that ____________________ and ____________________ are absent from a population. Fill in the blank(s) with the appropriate word(s).
ANS: mutations; migration
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particularly during DNA
replication and mitosis, are involved in crossing over during ____ of meiosis. a. prophase II b. prophase I c. metaphase II d. metaphase I e. telophase II
The drug Taxol, or Paclitaxel, is used to treat patients with a variety of cancers, including breast, lung and ovarian cancers. The drug works by stabilizing microtubules, and preventing their disassembly. The goal of the drug is to prevent dividing cells from being able to complete mitosis. As a result, cancerous cells can no longer divide. In a cell treated with Taxol, at what stage of mitosis will the cells arrest?
A. Prior to metaphase B. Telophase C. Anaphase D. Cytokinesis
A substance that is resistant to changes in pH is called a(n) buffer
__________________ Indicate whether the statement is true or false.
In testing if promotions (binary) Pi have an effect on sales, Si with a null hypothesis that the average treatment effect is zero, the null hypothesis could be written as:
A. E [Si (Pi = 1) - Si (Pi = 0)] = 0 B. E [Pi - Si ] = 0 C. E [Si (Pi = 1) - Si (Pi = 0)] = ETT D. E [Pi - Si ] = 1