#Question id: 4605
#Zoology
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?
#Question id: 4606
#Zoology
Which of the following evidence most strongly supports the common origin of all life on Earth? All organisms ________.
#Question id: 4607
#Zoology
Members of two different species possess a similar-looking structure that they use in a similar way to perform about the same function. Which of the following would suggest that the relationship more likely represents homology instead of convergent evolution?
#Question id: 4608
#Zoology
What must be true of any organ described as vestigial?
#Question id: 4609
#Zoology
Pseudogenes are ________.
#Question id: 4610
#Zoology
It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ________.