Complete reproductive isolation is evidence that what has occurred?

a. extinction
b. speciation
c. polyploidy
d. hybridization
e. gene flow


ANSWER: b

Biology & Microbiology

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Which of the species were probably herbivorous? On which test results did you base this conclusion?

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________ occurs when two species undergo reciprocal evolutionary change through natural selection

Fill in the blank(s) with correct word

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Calcium is a mineral that plays an important role in ____.

A. producing thyroid hormone B. water balance C. intercellular signaling in muscles and nerves D. supporting the hemoglobin molecule E. maintaining the cell membrane

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Sister chromatids are joined together at a pinched spot called the _______

Fill in the blank(s) with the appropriate word(s).

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