Considerably more phenotypic variation exists in domesticated varieties of species like dogs and cabbages than exists in non-domesticated species like lions and maple trees. Which one of the following statements best explains why this is true?
A. There is no selection and mating is random under domestication.
B. During domestication, very high rates of mutation are induced.
C. Genetic drift is important because domestication involves small populations.
D. Many domesticated varieties would not survive in the natural world.
E. Domesticated species exhibit "hybrid vigor" (heterosis).
D. Many domesticated varieties would not survive in the natural world.
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A) Clostridium perfringens. B) Mycobacterium tuberculosis. C) Ebola virus. D) Escherichia coli O157:H7.
Which molecule catalyzes covalent bond formation between fragments of DNA.
A. helicase. B. ligase. C. polymerase. D. primase. E. nuclease.
In this simulation, how is respiration rate being measured?
a. CO2 production b. CO2 consumption c. O2 production d. O2 consumption
The countries of ____ and ____ have the world’s highest human populations
a. India; China b. China; United States c. China; Brazil d. India; United States e. United States; Canada