Evolution of bilateral body plans was accompanied by:

a. cephalization
b. a brain
c. a spinal cord
d. reflexes
e. reasoning


a

Biology & Microbiology

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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?

Biology & Microbiology

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

Biology & Microbiology

"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.

Biology & Microbiology

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

Biology & Microbiology