DDT is a pesticide that was banned because of its negative impact on the environment. DDT weakened eggshells and caused the decline of many bird species, including bald eagles. Which statement best summarizes the impact of DDT on bald eagles at a genetic level?

DDT changed the genotype of the individual without affecting phenotypes, thereby decreasing adaptation.

The ability to survive decreased because evolution cannot occur with low population numbers and low genetic diversity.

DDT caused changes in DNA that decreased the survival of offspring, thereby decreasing the overall numbers of the population.

New alleles decreased genetic diversity within the population.

Question

Biology

London Dawson

21 March, 19:03

DDT is a pesticide that was banned because of its negative impact on the environment. DDT weakened eggshells and caused the decline of many bird species, including bald eagles. Which statement best summarizes the impact of DDT on bald eagles at a genetic level?

DDT changed the genotype of the individual without affecting phenotypes, thereby decreasing adaptation.

The ability to survive decreased because evolution cannot occur with low population numbers and low genetic diversity.

DDT caused changes in DNA that decreased the survival of offspring, thereby decreasing the overall numbers of the population.

New alleles decreased genetic diversity within the population.

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Answers (1)

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Marquise Haney · Answer 1

The correct option is C.

From the question given, we are told that DDT caused the decline of the bald eagles. Decline in the specie of a particular organism occurs because of changes to the DNA material of an organism, which reduces the survival rate of its offspring. This reduces the number of the specie population gradually until the organism become extinct unless the situation is addressed.