Which choice regarding DNA replication is true?
A) Mistakes in DNA replication are a mechanism of evolutionary change.
B) A change in amino acid sequence is inherent in mistakes in DNA replication.
C) Mistakes in DNA replication never occur.
D) Errors in DNA replication are detrimental to the survival of a species.
E) Mistakes in DNA replication are a direct response to the organism's environmental cues.
A) Mistakes in DNA replication are a mechanism of evolutionary change.
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What is the gender of the person indicated in the photograph?
A. Female B. Male C. Cannot be determined
One feature that amphibians and humans have in common is _____
A) the number of heart chambers B) the type of gas exchange tissues C) a complete separation of circuits for circulation D) the number of circuits for circulation E) a low blood pressure in the systemic circuit
All EXCEPT which one of the following are the
reasons for the rapid population explosion of humans? a. increases in carrying capacity b. expansion into new habitats c. removal of limiting factors d. reproduction occurring earlier in the life cycle e. None of these
Which of the following is an example of deductive reasoning?
A) Living objects are composed of cells. B) Atoms make up molecules, which make up cells, which make up tissues. C) If an object exhibits all the characteristics of life, it must be living. D) All objects on Earth will fall down when dropped, and none will "fall up."