Describe Lamarck’s four most important ideas that influenced Darwin’s evolutionary theory
What will be an ideal response?
ANSWER: First, he proposed that all species change through time. Second, he recognized that new
characteristics are passed from one generation to the next. Third, he suggested that organisms
change in response to their environments. And fourth, he hypothesized the existence of
specific mechanisms that fostered evolutionary change. All four of these ideas became
cornerstones of Darwin’s evolutionary theory.
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The function of the iris is to ____
a. control the amount of light entering the eye b. focus the image on the retina c. respond to particular colors d. keep the lens under tension to allow for image focusing e. prevent light scattering upon entry to the eye
Radiometric dating shows that Archaeopteryx lived
__________ million years ago. a. 50 b. 150 c. 250 d. 350 e. 450
The production of body fat
What will be an ideal response?
A mature walled ascus of an ascomycete usually contains
A. an egg and a sperm. B. eight diploid nuclei. C. eight haploid nuclei. D. a zygote. E. many multinucleate conidia.