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Which of the following scenarios represents disruptive selection within a population?
  • a)
    Heterozygous pink flowers are selected against while homozygous red and homozygous white flowers are selected for.
  • b)
    As pollution creates turbidity in a lake, brighter fish have greater reproductive success, causing the population to become more brightly colored on average.
  • c)
    Oak trees with medium-sized leaves are evolutionarily favored, as large leaves suffer from dehydration and small leaves don’t receive sufficient sun.
  • d)
    A population of snakes is split by the construction of a large road, causing speciation of the divided populations.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following scenarios represents disruptive selection withi...
The scenario that represents disruptive selection within a population is A. Heterozygous pink flowers being selected against while homozygous red and homozygous white flowers are selected for.
Disruptive selection, also known as diversifying selection, occurs when individuals with extreme phenotypes at both ends of the spectrum have higher fitness than those with intermediate phenotypes. This can result in the population becoming divided into two distinct groups or the maintenance of genetic variation within the population.
In scenario A, the heterozygous pink flowers are being selected against, while the homozygous red and homozygous white flowers are being selected for. This means that individuals with extreme phenotypes (red or white) have higher fitness compared to those with an intermediate phenotype (pink). This is a classic example of disruptive selection, as it leads to the divergence and maintenance of the red and white flower phenotypes within the population.
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Which of the following scenarios represents disruptive selection within a population?a)Heterozygous pink flowers are selected against while homozygous red and homozygous white flowers are selected for.b)As pollution creates turbidity in a lake, brighter fish have greater reproductive success, causing the population to become more brightly colored on average.c)Oak trees with medium-sized leaves are evolutionarily favored, as large leaves suffer from dehydration and small leaves don’t receive sufficient sun.d)A population of snakes is split by the construction of a large road, causing speciation of the divided populations.Correct answer is option 'A'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Which of the following scenarios represents disruptive selection within a population?a)Heterozygous pink flowers are selected against while homozygous red and homozygous white flowers are selected for.b)As pollution creates turbidity in a lake, brighter fish have greater reproductive success, causing the population to become more brightly colored on average.c)Oak trees with medium-sized leaves are evolutionarily favored, as large leaves suffer from dehydration and small leaves don’t receive sufficient sun.d)A population of snakes is split by the construction of a large road, causing speciation of the divided populations.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following scenarios represents disruptive selection within a population?a)Heterozygous pink flowers are selected against while homozygous red and homozygous white flowers are selected for.b)As pollution creates turbidity in a lake, brighter fish have greater reproductive success, causing the population to become more brightly colored on average.c)Oak trees with medium-sized leaves are evolutionarily favored, as large leaves suffer from dehydration and small leaves don’t receive sufficient sun.d)A population of snakes is split by the construction of a large road, causing speciation of the divided populations.Correct answer is option 'A'. Can you explain this answer?.
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