Evolution of bilateral body plans was accompanied by:
a. cephalization
b. a brain
c. a spinal cord
d. reflexes
e. reasoning
a
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In summer squash, spherical-shaped fruit has been
shown to be dominant to elongated fruit. On one occasion two different spherical varieties were crossed and produced all disk-shaped fruits. When these hybrid disk-shaped fruits were crossed, they produced 75 disk-shaped fruits, 48 spherical fruits, and 9 elongated fruits. Explain these results. What will be an ideal response?
Which group in the peacock butterfly experiment had the highest survival rates?
A. Those with more nocturnal habits B. Those without spots and without hissing/clicking sounds C. Those without spots but with hissing/clicking sounds D. Those with spots and hissing/clicking sounds E. Those with the same flower habitat as the birds
"Bt cotton" refers to cotton that:
A) is resistant to herbicides. B) is resistant to insect pests. C) has been infested with insect pests. D) is resistant to Bacillus thuringeniensis.
Which of the following types of microbes might be found in a boiling hot spring?
A. hyperthermophiles B. phototrophic bacteria C. methanogens D. non-thermophiles E. halophiles