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9 Cards in this Set
- Front
- Back
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What factors will improve with more knowledge of natural selection?
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Infectious disease treatments
Public health practices and public health policy Agricultural and livestock yields |
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Why do individuals in a population show variation in one or more aspects of phenotype?
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All humans have different phenotypes due to one or more different alleles.
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What three characteristics are necessary for natural selection to occur or for a population to evolve?
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genetic variation
differential reproduction (variable reproductive success) heredity |
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What are antibiotics?
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Antibiotics are anti-microbial molecules that enable communication among bacteria. An antibiotic can also be defined as a compound that kills bacteria.
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What causes natural selection in natural populations?
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Natural selection in natural populations is caused by human activities such as fishing, hunting, and logging activities.
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Why has natural selection favored frogs and other animals that can produce antibiotics?
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Frogs and other animals that produce antibiotics have an advantage in their environment because they are less susceptible to bacteria.
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Why has natural selection favored microbes that produce antibiotics?
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Microorganisms have an advantage because they can suppress bacteria that cause disease.
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What human traits/alleles have been affected by natural selection over the last 1,000 years?
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carbohydrate metabolism
drug metabolism altitude hair (baldness) hemoglobin structure (Malaria resistance) pigmentation |
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Why are antibiotics used in human medicine, veterinary medicine, and horticulture industries?
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They increase the rate at which our livestock grow. However, feeding our livestock antibiotics brings about the problem of antibiotic resistance.
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