Members of separate populations of the same species cannot interbreed.

a. true
b. false


Answer: b. false

Biology & Microbiology

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Explain the pressure flow theory. What will be an ideal response?

Biology & Microbiology

New variations of genes may be produced by all of the following EXCEPT

a. immigration. b. mutation. c. crossing over. d. sexual reproduction. e. fission.

Biology & Microbiology

The centromere of human chromosome 15 creates a long arm and a barely discernable short arm. Therefore, this chromosome is

A) telocentric. B) acrocentric. C) submetacentric. D) metacentric.

Biology & Microbiology

After mutations begin a cancer, other factors that influence whether the disease proceeds include

A) how old a person is and whether he or she smokes. B) whether a person has had cancer before and its location in the body. C) location of the cancerous cell in the tissue and how specialized the cell is. D) whether or not a person's relatives have cancer.

Biology & Microbiology