Wheat is a group of grass species. Cultivation originated in the eastern Mediterranean about 10,000 years ago; wheat is now grown on more land area than any other commercial food
If humans did not exist, what would have been the likely evolutionary trajectory of wheat?
How could you test this hypothesis?
A. Wheat would be a wild grass found only in
its native environment. Colonize different
environments and measure the establishment
success of wheat.
B. Wheat would have become a dominant
grass on the planet regardless of the
presence of humans. Plant wheat in an area
and measure its growth rate.
C. Wheat would have gone extinct because
few species have survived over 10,000 years.
Plant wheat and other grasses and watch the
resulting ecosystem develop.
D. Wheat would have spread beyond its
original ecosystem to other hospitable
environments. Examine the dispersal and
colonization of other grass species with
similar characteristics to wheat.
D
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a. salicylic acid b. gibberellin c. abscisic acid d. auxin e. oligosaccharin
Global air circulation patterns affect climate and the distribution of __________. Fill in the blank(s) with the appropriate word(s)
Which of the following is true about mutations?
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The hypothalamus and thalamus are in the _______ of the brain.
Fill in the blank(s) with the appropriate word(s)