Mendel's Experiments on Pea Plants
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Questions and Answers

What is a characteristic according to Mendel's study?

  • A feature that has different forms in a population (correct)
  • A trait found in only one species
  • Only observable traits in animals
  • A random feature without variations
  • Mendel studied multiple characteristics simultaneously in his experiments.

    False

    What is the result of breeding two plants that have different traits of a single characteristic known as?

    cross-pollination

    The trait that is observed in the first generation when parents that have different traits are bred is called a ______.

    <p>dominant trait</p> Signup and view all the answers

    Match the following traits with their definitions:

    <p>Dominant trait = The trait observed in the first generation when parents with different traits are bred. Recessive trait = A trait that reappears in subsequent generations after being masked.</p> Signup and view all the answers

    What is a key advantage of self-pollinating pea plants?

    <p>They can ensure all offspring have the same traits as the parent.</p> Signup and view all the answers

    Pea plants can only self-pollinate and cannot cross-pollinate.

    <p>False</p> Signup and view all the answers

    What result does self-pollination produce in true-breeding plants?

    <p>All offspring have the same trait as the parent.</p> Signup and view all the answers

    Pollen from one plant fertilizes the ovule of another plant in _____.

    <p>cross-pollination</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Self-pollination = Pollination occurring within the same flower or plant Cross-pollination = Pollination occurring between different plants True-breeding = Offspring consistently exhibit the same traits as the parent Pollinators = Insects or elements that aid in the transfer of pollen</p> Signup and view all the answers

    Study Notes

    Mendel's Experiments

    • Mendel studied pea plants to investigate heredity
    • Pea plants grow quickly, and there are many different kinds available
    • Pea plants are able to self-pollinate
    • The male and female reproductive structures are on the same plant
    • Pollen from one flower can fertilize the ovule of another flower on the same plant
    • This is called self-pollination
    • The process of self-pollination ensures true-breeding offspring
    • Mendel used true-breeding plants with different traits for each characteristic
    • Mendel carefully selected plants that were true-breeding for specific traits
    • He studied seven different characteristics
    • Mendel studied only one characteristic at a time
    • A characteristic is a feature that has different forms in a population
    • For example, hair color or eye color
    • The different forms are called traits
    • Mendel used plants that had different traits for each characteristic
    • For flower color, he used plants with purple flowers and plants with white flowers
    • He used pollen from one plant to fertilize the other

    Mix and Match

    • Mendel was careful to use plants that were true-breeding for each trait
    • By doing so, he would know what to expect if his plants were to self-pollinate
    • He wanted to know what would happen if he bred or crossed two plants that had different traits of a single characteristic.
    • Mendel decided to cross-pollinate the plants and not allow them to self-pollinate
    • To be sure the plants could not self-pollinate, he removed the anthers of one plant before pollen from another plant could fertilize the plant.
    • This allowed Mendel to select which plants would be crossed to produce offspring.

    Dominant/Recessive Traits

    • When parents with different traits are bred, the trait observed in the first generation is called the dominant trait.
    • The trait that reappears in the second generation is called the recessive trait.

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    Description

    Explore the groundbreaking experiments of Gregor Mendel with pea plants. This quiz delves into Mendel's methods, including self-pollination and the study of various traits. Test your knowledge on how these experiments laid the foundation for modern genetics.

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