GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A butterfly changes colors to look like its poisonous relatives.
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A bird in the desert breeds at night to avoid the heat.
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A groundhog runs into a burrow to avoid a predator.
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A beaver builds a dam to protect its family.
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Detailed explanation-1: -Which demonstrates genetic variation resulting in a protective adaptation? A butterfly changes colors to look like its poisonous relatives.
Detailed explanation-2: -Camouflage allows organisms to become almost invisible to predators. Some species have evolved morphological adaptations that allow them to blend in with their environments.
Detailed explanation-3: -Adaptations are traits that an organism inherits from its parents. Within a population of organisms are genes coding for a certain number of traits. For example, a human population may have genes for eyes that are blue, green, hazel, or brown, but as far as we know, not purple or lime green.
Detailed explanation-4: -Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).