The difference in the appearance of the male and the female of the same species is called
a. polymorphism.
b. sexual dimorphism.
c. the dioecious condition.
d. sexual selection.
e. a primary sexual characteristic.
B
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Twin spotting provides evidence of what genetic event?
A. Meiotic recombination B. Mitotic recombination C. Linkage D. Mutation E. Biological evolution
Charged atoms are termed
A. ions. B. neutrons. C. molecules. D. polymers.
One of the functions of the skeletal system is the storage of ________ and ________
Fill in the blank(s) with correct word
A researcher suspects that the food in an ecosystem has been contaminated with radioactive phosphates over a period of months. Which of the following substances could be examined for radioactive phosphate to test the hypothesis?
A) the amino acids within proteins produced by organisms living in the area B) the starch produced by plants in the area C) the DNA of the organisms in the area D) All of the above are true.