Two animals are considered members of different species if they __________.
Fill in the blank(s) with the appropriate word(s).
Answer: cannot interbreed
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Sometimes an allele that has no phenotypic effect can spread through a population by means of
a. a selective sweep b. genetic recombination c. disruptive selection d. frequency-dependent selection e. directional selection
An organelle that is a stack of flattened, membranous sacs and functions to receive, modify, and package proteins for cell secretion is the
A. chloroplasts. B. Golgi apparatus. C. mitochondria. D. endoplasmic reticulum. E. lysosomes.
The RDAs are considered to be adequate to meet the known nutritional needs of
What will be an ideal response?
Which part of the innate response cuts holes in the cell membranes of pathogens?
A) fibrin B) cytokines C) complement proteins D) antibodies E) histamines