Was this a pre-mating or post-mating barrier?

a. pre-mating barrier, because individuals do not mate
b. post-mating barrier, because hybrids are produced but they do not reproduce
c. pre-mating barrier, because fertilization occurs but the hybrids are not viable
d. post-mating barrier, because hybrids are sterile and unable to mate


B

Biology & Microbiology

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Which of the following was the likely origin of chloroplasts?

a. cyanobacteria b. mitochondria c. extremophiles d. prokaryotes

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Bacteriophages decrease food safety

____________________ Indicate whether the statement is true or false.

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One method plants use to obtain phosphorus when it is in limited supply is

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