Members of separate populations of the same species cannot interbreed.
a. true
b. false
Answer: b. false
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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.
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.
Explain the pressure flow theory. What will be an ideal response?
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.