Anthropology 111 Without variation natural selection cannot occur explain why
Explain why a lack of variation can constrain evolution by natural selection
For 3. Define the terms fitness, adaptation, natural selection, and evolution. 4. Why is variation so crucial for the survival of a species? 5. If the environment changes, is it certain that a species will adapt to it and survive? Why? 6. Does modern medicine affect natural selection in the human species today? Explain.
Can individuals evolve? Explain this using natural selection and variation. Did Darwin use genetics to explain his ideas of natural selection and descent with modification? Explain
Question 10 2 pts Why does coevolution not occur in commensalism relationships? O a. Natural selection has little or no effect because selection pressure is only occurring in one direction (1.e. only one of the two species in the relationship is exerting selection pressure). O b. Both species in the relationship are harmed causing at least one species to go extinct, therefore natural selection is not able to occur. O c. Abiotic factors prevent the occurrence of coevolution in commensalism...
Why is heritable variation among individuals an important factor for natural selection? All the hereditary information of an organism, including the totality of the DNA (I.e. coding and noncoding regions alike) is called
Label if the examples below are natural selection, or artificial selection. The watermelon that we have today. Finches with larger beaks so they can eat seeds. The corn plants eaten today. Camels that drink less water and can survive. Beavers with stronger teeth that help build their homes. Different breeds of dogs that make cute pets. Horses that run fast for races. Cows that are friendly. Deep sea creatures that can glow to attract prey. Why does genetic variation make...
Explain why sexual selection results in sexual dimorphism, while natural selection does not.
D Question 14 2 pts Natural selection will not occur in a population over time if All individual variation is due to environmental factors. The environment is changing at a relatively slow rate. The population size is large. The population lives in a habitat where there are no competing species present Besides Darwin, who else proposed a concept of natural selection? Charles Lyell Gregor Mendel Alfred Wallace e John Henslow Thomas Malthus
Explain why a recessive allele that causes disease may not be eliminated by natural selection.
Why can't evolution by natural selection explain the presence of the peacocks elaborate tail?