Biology

Biology, 24.07.2019 15:30, xEmqq2034

Darwin hypothesized that there are definite steps to natural selection. consider the model for natural selection. describe a scenario that represents this model of natural selection according to darwin.

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Physics, 06.07.2019 16:20, monithebtslover01

Natural selection. darwin hypothesized that there requisites for natural selection to occur and that there are definite steps to natural selection. note the two models seen here. both of the models illustrate an important requisite for natural selection. that is: a) sexual reproduction must occur. b) there is survival of the fittest. c) variation in the population exists. d) genetic sameness reduces the chances of natural selection.

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Biology, 19.07.2019 07:30, giulissaf

Me ! darwin hypothesized that there are definite steps to natural selection. consider the model of bacterial resistance to antibiotics. how would darwin explain step i? question 1 options: bacteria adapt to environmental changes. some bacteria alter their dna in response to environmental changes. in any population, some individuals are weaker than others. in any population, genetic variation exists.

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Biology, 29.07.2019 10:30, zakwolthuis

Darwin hypothesized that there are definite steps to natural selection. consider the model for natural selection. describe a scenario that represents this model of natural selection according to darwin.

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Geography, 11.11.2019 02:31, hcoulter15

darwin hypothesized that there are definite steps to natural selection. consider the model for natural selection. describe a scenario that represents this model of natural selection according to darwin. a) in a population of rabbits, some are brown all year long. when it snows these rabbits cannot hide from predators and they become extinct. b) in a population of sunflowers, mutations cause some flower heads to produce more seeds. more seeds means that there are more sunflower plants over time. c) in a populations of birds, mutations result in different beak sizes so the birds do not compete for food in the area. the bird population is made up of birds with many different types of beaks. d) in a population of bacteria, variations exist due to mutation. the bacteria are subjected to antibiotics. some bacteria die; others survive and reproduce. eventually, the bacteria a resistant to the antibiotics.

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