How did an understanding of genetics lead to "the modern synthesis"?
A) It showed how traits could be passed from one organism to the next.
B) It showed how many offspring a single individual was capable of producing.
C) It showed the extent of variation for many traits.
D) It showed the kind of environmental change that could cause evolution.
A
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A nucleotide may consist of
(a) deoxyribose or ribose. (b) purines or pyrimidines. (c) phosphate groups. (d) all of the above.
When Darwin observed several species of finches on the Galápagos Islands had unique beak characteristics, he compared them with finch beaks on the mainland. Which of the following studies use geographic distribution of extinct and living species to determine patterns of evolution?
A. Biology. B. Geology. C. Palentology. D. Geneology. E. Biogeography.
Which one of the following sexually transmitted diseases can be cured by the use of antibiotics?
A) genital herpes B) AIDS C) pubic lice D) gonorrhea E) hepatitis B
Some students consume large amounts of coffee and so-called energy drinks to help them stay alert when studying. You notice that many who engage in this practice seem to do poorly on exams. Suppose you want to investigate the relationship between caffeine consumption and exam performance. Which of the following statements would be an appropriate hypothesis?
(a). Students who consume large amounts of caffeine while studying will have lower exam scores than those who consume less caffeine. (b). One should avoid consuming too much caffeine while studying. (c). Too much caffeine is harmful to your health. (d). Many students consume large amounts of caffeine while studying. (e). Caffeine increases alertness but also increases anxiety.