Mutation can be defined as the addition of genetic variation that increases the hereditary diversity of a population.
a. true
b. false
Ans: a. true
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Which of the following conditions is not associated with diabetes?
A. elevated levels of blood glucose B. lowered production of insulin by the pancreas C. reduced body cell sensitivity to insulin D. defects in pituitary gland function E. careful diet and exercise measures are required to balance blood sugar levels
The abiotic factor that has had the greatest evolutionary effects on deep-sea animals is:
a. low temperatures. b. high pressure. c. low nutrients. d. lack of light. e. varying salinity.
In this reaction, ADH represents the
a. enzyme. b. substrate. c. product. d. activation energy. e. trigger.
Which of the following statements correctly describes a portion of the pine life cycle?
A) Female gametophytes use mitosis to produce eggs. B) Seeds are produced in pollen-producing cones. C) Pollen grains contain female gametophytes. D) A pollen tube slowly digests its way through the triploid endosperm.