One important conclusion of Mendel's genetic studies with pea plants is ____
a. mutation is the only important factor in change
b. genes controlling traits do not blend during inheritance, but are transmitted as discrete entities
c. the traits that an organism inherits are the average of the two alleles
d. if particular traits do not appear in each generation, they are lost from the species
e. once a trait becomes recessive, it is lost to the population forever
b
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Steam burns are more damaging than burns caused by boiling water because steam
A. has more energy per kilogram than boiling water. B. gives up additional energy when it condenses. C. both A and B D. neither A nor B
What adaptation have only toothed whales developed for prey detection?
a. Ability to generate internal body heat b. Bradycardia c. Advanced gas exchange system d. Echolocation
Which image is an example of an angular unconformity?
Dead zones are characterized by a lack of ____.
A. phosphorus B. nitrogen C. oxygen D. chlorine E. fecal material