If, someday, an archaean cell is discovered whose rRNA sequence is more similar to that of humans than the sequence of mouse rRNA is to that of humans, the best explanation for this apparent discrepancy would be ________.

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#Question id: 12292

#Section 1: Ecology

Advantages of group living include _______________.

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#Question id: 11349

#Section 1: Ecology

Prey exposed to a predator may __________.

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#Question id: 4605

#Section 2: Evolution

Over long periods of time, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. Whales have lost their hind limbs. How can natural selection account for these losses?

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#Question id: 11771

#Section 1: Ecology

Reciprocal transplant experiments are designed to reveal whether differences between populations are due to:

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#Question id: 4724

#Section 2: Evolution

Which of the following are true about crossing over ?