PLEASE help...i don't understand how to do this

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n tomatoes, red fruit is dominant to yellow fruit color. A farmer has plants that produce either red or yellow tomatoes. he has signed a contract with a large seed company to provide pure red seeds and pure yellow seeds. the do not want hybrids. How can the farmer determine if his red tomatoes are pure or hybrid. The farmer can't see the genotype except for one phenotype.

  • PLEASE help...i don't understand how to do this -

    Let "F" represent red fruit
    Let "f" represent yellow fruit

    ___________|________F_______|_____f______
    ______F____|________FF______|_____Ff_____
    ______f____|________Ff______|_____ff_____

    He can determine it by using the chart above

    He can determine what's a pure or hybrid if all fruits' colour are one colour or not...

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