EVOLUTION
DARWIN’S THEORY OF NATURAL SELECTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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there are equal number of light and dark grey peppered moths in the population
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more light grey moths survive than dark grey moths
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more dark grey moths survive than light grey moths
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all peppered moths will be eaten before they can reproduce
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Detailed explanation-1: -Finally it was found that the color was genetic. Moths passed their color to the next generation. Eggs from light moths developed into light moths and dark moth eggs turned to dark adults. The dark color was caused by a mutation in the DNA of a single moth, and the mutated gene had been passed to all its offspring.
Detailed explanation-2: -As the trees darkened with soot, the light-colored moths were easier to see. They were eaten by birds more and more, while the rare dark colored moths blended in better on the darker trees. This made the dark colored moths have a higher survival rate.
Detailed explanation-3: -Wing-color changes in peppered moths are a common example of what scientists refer to as natural selection. In it, organisms develop random mutations. Some of the gene changes will leave individuals better suited-or adapted-to their environment. These individuals will tend to survive more often.
Detailed explanation-4: -How did the peppered moth population become mostly dark-colored? As the light gray peppered moths were eaten by predators, the darker moths survived. These dark-colored peppered moths bred with other dark-colored peppered moths and produced dark offspring that were more likely to survive than light gray peppered moths.