Which is easier to establish in a pure-breeding population, a dominant or a recessive gene? What will be an ideal response?
ANSWER: Recessive
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Select the diseases caused by trypanosomes.
A. Leishmaniasis B. Giardiasis C. Trichomoniasis D. African Sleeping Sickness E. Chagas Disease
An important message from the work of Thomas Malthus that influenced Charles Darwin was
A. animals tended toward "human perfection." B. only a fraction of any population will survive and reproduce. C. population size of humans can only increase linearly. D. inheritance of acquired characteristics. E. none of these. Charles Darwin was influenced by John Ray not Thomas Malthus.
Pathogenic staphylococci inhibit neutrophil chemotaxis, phagocytosis, and the action of vancomycin by the production of ________.
A. leukocidins B. slime C. hemolysins D. a capsule
Natural selection is only one of several possible causes of evolution
Indicate whether the statement is true or false