Prior to the work of Lyell and Darwin, the prevailing belief was that Earth is _____
A) a few thousand years old, and populations are unchanging
B) a few thousand years old, and populations gradually change
C) millions of years old, and populations rapidly change
D) millions of years old, and populations are unchanging
A
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Which of the following adaptations increase(s) the amount of oxygen that a fish can extract from the surrounding seawater?
A. All of the answer options are correct. B. gills with a large surface area C. very thin lamellae D. countercurrent exchange E. ventilation of the gills with the aid of an operculum
Jupiter was probably influential in preventing the formation of a planet at the present location of the asteroid belt
a. True b. False Indicate whether the statement is true or false
In a colony of 100 guinea pigs, 16 show the recessive trait of bristly hair. What is the frequency of the
recessive allele in the population?
a. .4 b. .16 c. .04 d. .016 e. .2
Which of the following groups of scientists were influential around the year 1900 in setting the stage for our present understanding of transmission genetics?
A) de Vries, Correns, Tschermak, Sutton, and Boveri B) Beadle, Tatum, and Lederberg C) Hippocrates, Aristotle, and Kölreuter D) Watson, Crick, Wilkins, and Franklin E) Darwin, Mendel, and Lamarck