The class Insecta
a. Has more species than any other group of animals
b. Is of major medical importance to humans
c. Is of major economic importance to humans
d. Are critical in ecology that the loss of all insects would cause a major disruption in nature
e. All of the choices are correct
Answer: e. All of the choices are correct
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Most Hydrozoan polyps form sessile colonies that develop asexually from one individual
a. True b. False
Differences in patterns by which muscles connect to bones is relatively invariant in vertebrates
Indicate whether the statement is true or false.
Base analogs may cause mutations because
A) they modify the chemical structure and properties of the normal base. B) they insert themselves between adjacent bases on the DNA strand and cause an extra base to be inserted during replication. C) they remove amino groups from bases, causing them to pair with the wrong base during replication. D) they may exist in alternate chemical states that pair with different DNA bases than the normal state during replication. E) Both A and C
Hybrid inviability can increase over generations
____________ Indicate whether the statement is true or false.