The Protenor mode of sex determination is the ________
A) XO/YY scheme
B) XX/XO scheme
C) hermaphroditic scheme
D) scheme based on F plasmids inserted into the FMR-1 gene
E) scheme based on single translocations in the X chromosome
B
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Which is a biotic component of an ecosystem?
A. water B. archaea C. rock D. salinity E. temperature
The dominant vegetation of the temperate rain forest includes which of the following?
a. Sitka spruce b. western red oak c. beech d. bamboo e. Southern pine
what digestive enzymes are produced by the small intestine
What will be an ideal response?
Which of the following contributes to protecting the eyes from microbial invasion?
A) tears contain lysozyme and salt. B) a mucus layer traps and removes microbes. C) tears mechanically flush particles from the eyes. D) tears contain lysozyme and salt and mechanically flush particles from the eyes. E) tears and mucus combine to trap microbes and remove them.