If one was estimating a simple regression of Earnings (Y) on Height of individuals (X), and got a coefficient on the Height variable of 30, what would the intercept be if you added 3 inches to every individual in the sample but kept their earnings the same?
A. 30
B. Above 30, but not enough information to tell exactly.
C. Below 30, but not enough information to tell exactly.
D. None of these choices are correct.
Answer: D
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Pathogenicity islands are
A. enzymes like proteases and hemolysins that promote pathogenesis. B. gene clusters that confer the ability to become pathogenic. C. a lymphoid tissue present in the small intestine. D. closely related groups of pathogenic enteric organisms.
Aquaporins are
a. cells that are specialized for water transport. b. transport channels for water. c. the entry point of filtrate into a nephron. d. transport channels for ions. e. the exit channel for urine out of a nephron.
If alleles L, M, and N are on the maternal
chromosome and l, m, and n are on the paternal chromosome, the only way that a gamete from a heterozygote will produce a gamete with alleles l, m, and N is through a. nondisjunction. b. the laws of segregation. c. the law of independent assortment. d. crossing over. e. chromosome aberration.
At which one of the following checkpoints might the cell cycle be halted if all of the DNA has not yet been replicated?
A) G1 B) G2 C) M D) T E) S