Which of these is the result of disruptive selection? neck length in giraffes. a
ID: 79455 • Letter: W
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Which of these is the result of disruptive selection? neck length in giraffes. antibiotic resistance in bacteria. pesticide resistance in insects. unequal size of eggs and sperm. Evolution is still going on. For a population not to evolve no mutations can occur. there must be no migration in or out. all individuals must have an equal chance of surviving and reproducing. All of the above. The observation that the embryos of vertebrates are all anatomically similar is considered to be evidence that all vertebrates are well adapted to their environments. are genetically uniform. were once reptiles. evolved from a common ancestor. Before 450 million years ago, what prevented animals from evolving ways to leave the ocean and live on land? the land was too dry. the mutation rates were too slow. ultraviolet radiation levels were too high. the temperature was too high. Of all the species that have ever lived on earth, how many are still alive today? About 1%. 5% 50%. 99%. The most efficient reproductive isolating mechanism is one that prevents two different species from being attracted to each other. copulating with each other. fertilizing each others' eggs. raising sterile offspring.Explanation / Answer
7. disruptive Selection: This diversified selection process shows changes in a population genetics, where extreme values for a trait are more likely favored over intermediate values. The answer here will be D. Unequal size of sperms and eggs. While other examples are directional selection.
8. Population not to evolve is to D. all of the other options, as evolution definition says all the organisms believed to be developed from their earlier form, this is lead my migration, natural selection and also change by mutation.
9. The observation from the Darwinism he suggested that evolutionary ancestral root we all possess. Here is the classic example as vertebrates have the same type of structure and form in the embryo stage.
Answer is here D. Evolved from a common ancestor.
10. Before 450 million years ago the geological period is known as 'Ordovician' period. Here we have found evidences of oceanic life and the condition was too extreme in the land, around 100 meteorites had struck the earth, also around 460 million years ago the earth has become cooler. So answering this, the correct answer choice would be A. The land was too dry, yet to produce any species form, as later on ice started to form on earth.
11. Among all the species have survived the life on earth around A. 1% are left today to live after the extinction.
12. The most efficient reproductive isolating mechanism is B. Copulating with each other.
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