#Question id: 4602
#Zoology
If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?
#Question id: 4603
#Zoology
Of the following anatomical structures, which is homologous to the bones in the wing of a bird?
#Question id: 4604
#Zoology
Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, which develop from similar embryonic tissues. These structural similarities are an example of ________.
#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?