Genetics and Fruit Fly Study
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Questions and Answers

Which specific observation in the fruit fly study contributed significantly to understanding inheritance mechanisms?

  • The ratio of male to female offspring in each generation
  • The correlation between wing size and flight duration
  • The link between certain traits and the sex of the fly (correct)
  • The average lifespan of fruit flies
  • What did the 17-year fruit fly study confirm, solidifying its place in the history of genetics?

  • The particulate nature of genetic material
  • The Law of Independent Assortment
  • The theory of spontaneous generation
  • The Chromosomal Theory of Inheritance (correct)
  • Which scientific advancement was a direct result of the fruit fly study?

  • Discovery of DNA's double helix structure
  • Construction of genetic maps (correct)
  • Development of genetic engineering techniques
  • Identification of specific genes responsible for diseases
  • How did the fruit fly study impact Mendel's work?

    <p>It validated and extended Mendel's principles to the animal kingdom (D)</p> Signup and view all the answers

    How did the fruit fly study contribute to the broader field of genetics?

    <p>It marked the beginning of genetic research as a field (A)</p> Signup and view all the answers

    Which chromosome combination is found in male fruit flies?

    <p>XY (A)</p> Signup and view all the answers

    What was the duration of the fruit fly study?

    <p>17 years (D)</p> Signup and view all the answers

    Approximately how many scientific papers resulted from the 17-year fruit fly study?

    <p>370 (C)</p> Signup and view all the answers

    In the context of the fruit fly study, the white-eyed trait was significant because it:

    <p>provided evidence of a trait linked to a specific chromosome (D)</p> Signup and view all the answers

    Flashcards

    Sex-linked traits

    Traits that are associated with genes located on sex chromosomes.

    Chromosomal theory of inheritance

    A theory which states that genes are located on chromosomes and inherit via them.

    Genetic maps

    Diagrams that show the location of genes on chromosomes.

    Mendel's principles

    Principles of inheritance observed by Gregor Mendel, originally in plants.

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    White-eyed trait in fruit flies

    An example of a sex-linked trait specifically observed in fruit flies.

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    Male vs. Female fruit flies

    Males have one X and one Y chromosome; females have two X chromosomes.

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    Launch of genetics field

    Morgan's work acted as a pivotal starting point for genetics research.

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    Contribution duration

    The study of fruit flies lasted for 17 years, leading to significant genetic discoveries.

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    Total papers written

    370 scientific papers were produced from the fruit fly studies.

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    Study Notes

    Fruit Fly Study

    • Fruit flies were studied for 17 years
    • This study revealed sex-linked traits
    • White-eyed trait is linked to the fly's sex
    • Other sex-linked traits were found
    • Sex chromosomes: Male (X and Y), Female (X and X)
    • White eyes are only in males, thus carried on the Y chromosome
    • Genes occupy specific locations on chromosomes
    • Genetic maps were created
    • Morgan's work confirmed and extended Mendel's work
    • Morgan's work marked a turning point in understanding inheritance
    • His work launched the field of genetics

    Scientific Papers

    • 370 scientific papers were written

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    Description

    Explore the groundbreaking 17-year study of fruit flies that unveiled sex-linked traits, particularly the white-eyed trait linked to chromosomes. Discover how Morgan's research advanced the understanding of genetics and inheritance, shaping the field significantly.

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