#Question id: 4599
#Unit 11. Evolution and Behavior
Many crustaceans (for example, lobsters, shrimp, and crayfish) use their tails to swim, but crabs have reduced tails that curl under their shells and are not used in swimming. This is an example of ________.
#Question id: 4728
#Unit 8. Inheritance Biology
The genotype r/r ; p/p gives fowl a single comb, R/– ; P/– gives a walnut comb, r/r ; P/– gives a pea comb, and R/– ; p/p gives a rose comb. Which of the following parental genotype would produce 3/8 Walnut comb, 1/8 pea comb, 3/8 rose comb and, 1/8 single comb?
#Question id: 11423
#Unit 10. Ecological Principles
Our ability to distinguish different biomes under similar conditions in different parts of the world depends primarily on which of the following factors that influence the distributions of growth forms?
#Question id: 311
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following has no contribution to the stability of tRNA?
#Question id: 2070
#Unit 2. Cellular Organization
The sodium-potassium pump is called an electrogenic pump because it: