Why is it important to preserve the genes of the wild relatives of crop plants?
A) It is not important because the human population no longer eats wild foods.
B) Beneficial genes from the wild relatives may be transferred into crop plants.
C) By preserving the genes, we can control the growth of the wild relatives, which threaten our crop plants.
D) The wild relatives are the food sources for all domestic animal species.
E) It is not important because the wild species have all become extinct.
B
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a. serine b. glycine c. threonine d. tryptophan e. tyrosine
CO2 + 6 H2O ? C6H12O6 + 6 O2
Which of the following is FALSE?
a. Water is a reactant. b. C6H12O6 is a product. c. Molecular oxygen is a product. d. CO2 is a reactant. e. Molecular carbon is a reactant.
Each DNA strand serves as which of the
following during DNA synthesis?
a. a replicate b. a substitute c. a template d. a source of nucleotides e. all of these
Which of the following reactions is a dehydration reaction?
A. A + B + H2O ? C B. A + H2O ? B + C C. A ? B + C+ H2O D. A + B ? C + H2O