A process in which organisms with certain inherited characteristics are more likely to survive and reproduce than individuals with other characteristics is called __________.

A. .evolutionary adaptation
B. descent with modification
C. natural selection
D. evolution


C. natural selection

Biology & Microbiology

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Suppose you are provided with an actively dividing culture of E. coli bacteria to which radioactive thymine has been added. What would happen if a cell replicates once in the presence of this radioactive base?

A) One of the daughter cells, but not the other, would have radioactive DNA. B) Neither of the two daughter cells would be radioactive. C) All four bases of the DNA would be radioactive. D) Radioactive thymine would pair with nonradioactive guanine. E) DNA in both daughter cells would be radioactive.

Biology & Microbiology

Fertilization takes place in the ____________________, and the embryo grows and develops in the

____________________. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which of the following best defines what occurs during transcription?

a. DNA is used to make a polypeptide. b. A polypeptide is used to make RNA. c. RNA is used to make a DNA strand. d. DNA is used to make a complementary RNA copy

Biology & Microbiology

The developing fetus secretes chorionic gonadotropin only during the first 2 weeks of pregnancy

Indicate whether the statement is true or false

Biology & Microbiology