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23 April, 02:39

Which of the following crosses would always result in offspring that only display the dominant phenotype? TT x tt Tt x Tt TT x TT Tt x tt both A and C

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  1. 23 April, 04:03
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    both A and C

    Explanation:

    To know whats happens with all the offspring and the probabilities you need to draw Punnett squares.

    We will call T the dominant trait and t the recessive.

    TT x tt = Tt Tt Tt Tt = 100% Tt

    100% of the offspring will show the dominant allele.

    Tt x Tt = TT Tt tT tt = 25% TT 50% Tt 25% tt

    Here, you have 25% chances that the offspring shows the recessive allele.

    TT x TT = TT TT TT TT = 100% TT

    100% of the offspring will show the dominant allele.

    Tt x tt = Tt tt tt tt = 25% Tt 75% tt

    Here, you have 75% chances that the offspring shows the recessive allele.
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