Biology, 24.06.2019 13:00 21megoplin

Which type of selection leads to increased phenotypic and genetic variation?

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Answer from: davelopez979

The answer is , Disruptive Selection!

Answer from: isabelzavalalopez28

Its disruptive selection.

Explanation:

Nature selects those variations which can be inherited and makes the survival better so that the individual carrying these useful variations reproduce and form more number of progeny. This effect of natural selection can be stabilizing, directional and disruptive.

Disruptive selection: It is a type of natural selection where mean character value is not preferred but both the peripheral character values are preferred by the nature. For example in a population, if nature selects both the tall and dwarf people but not the medium height people then it is called disruptive selection.

In case of directional selection only one of the extreme character value is selected by the nature. For example in a population, if nature selects only the tall people or only the dwarf people then is is said to be directional.

Stabilizing selection is when nature favors the mean character value i.e. if nature favors or selects the medium sized individuals, then the selection is said to be stabilizing. We get a bell shaped graph for stabilizing selection.

Answer from: Quest

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar flies (drosophila). one sample revealed an anomaly: a white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs) produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.

Answer from: Quest

Ican not answer this question since it does not have enough information

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