The phenotype is _____
A. controlled by the genotype
B. the expression of a trait in an organism
C. the result of inheritance from both parents
D. never homozygous
E. all of these
B
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Compare and contrast the out-of-Africa model and multiregional theories of the origin of modern man. Which theory is supported by the preponderance of genetic evidence? What type of evidence supports the other theory
What will be an ideal response?
If a living plant cell is placed in a beaker with pure water, it will take up water until ____
a. within the cell ?P = ??S b. it bursts c. its ?P = 0 d. its ?S = ?S of the pure water e. its ?S = 0
In humans, X-linked traits:
a) occur on the X-chromosome. b) are passed from fathers to their sons. c) tend to skip generations. d) occur more frequently in females. e) All of the above are true.
Which of the following is true of iodine?
a. Many pregnant women in the United States are likely deficient in iodine. b. Iodine toxicity significantly impairs brain development and function. c. Iodine has many well-established roles in the body. d. The majority of iodine in the American diet is provided by seafood.