An example of a prezygotic isolating mechanism is behavioral isolation

a. True
b. False


ANSWER: True

Biology & Microbiology

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The separate feeding locations of these five warbler species on different portions of the same tree illustrates:

A. biotic transformation. B. competitive exclusion. C. resource partitioning. D. top-down population regulation.

Biology & Microbiology

According to the theory of endosymbiosis, which organelles evolved from small prokaryotes that established residence within other, larger prokaryotes?

A) vacuoles and lysosomes B) Golgi apparatus and endoplasmic reticulum C) centrioles and ribosomes D) mitochondria and chloroplasts

Biology & Microbiology

Antheridia are structures that produce ________

Fill in the blank(s) with correct word

Biology & Microbiology

In agriculture, male animals are often castrated to modify their behavior and to produce desirable qualities in the meat. What would you predict about hormone levels in castrated male animals?

A. Testosterone is low; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are low. B. Testosterone is high; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are low. C. Testosterone is low; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are high. D. Testosterone is high; follicle stimulating hormone (FSH) and luteinizing hormone (LH) are high.

Biology & Microbiology