10.3 – The theory of Natural Selection – Flashcards
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Artificial Selection
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More commonly known as selective Breeding, where professionals study the genotype and phenotype of parent organisms in the hope of producing a hybrid that possesses many of the desirable characteristics found in their parents.
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Natural selection
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Is an act to eliminate w/ certain traits from population
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Population
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A group of organisms of one species that interbreed and live in the same place at the same time
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Fitness
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encompasses the ability to survive to reproductive age, success at finding a mate/s and producing offspring. Basically, the more offspring an individual makes during its lifetime,
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Heritability
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Ability of a trait to be passed from one generation to the next
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What did Darwin hope to learn about artificial selection by studying pigeons ?
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He wanted to learn whether you can possibly change the whole species following that specific pigeon into a new species of pigeons.
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What are the main four principles to natural selection?
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Variation, overproduction, adaptation, descent with modification
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Why must there be variation in the population in order for natural selection to occu?
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The heritable differences, or variation that exist in every population are the basis for natural selection. The differences among individuals result form differences in the genetic materialism the organisms, whether inherited from a parent or resulting from genetic mutation
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How would you explain a species that remain the same for millions of years?
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This can happen by certain species already well adapted to their enciorment
