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What is a cross called between an indivi...

What is a cross called between an individual with unknown genotype for a particular trait with a recessive individual of the same trait?

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A cross between an individual with unknown genotype for a particular trait with a recessive individual of the same trait is called test cross.
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Dominant & recessive trait

Knowledge Check

  • The genotype of a person with sickle-cell trait is :

    A
    `Hb^AHb^A`
    B
    `Hb^SHb^S`
    C
    `Hb^SHb^A`
    D
    Non of these

  • If a cross is made between two individuals each having genotype Bb, two offsprings are obtained. Out of these first has dominant trait. What is the probability that the second offspring will exhibit recessive trait

    A
    `1//4`
    B
    100
    C
    Zero
    D
    `3//4`

  • A dihybrid for qualitative trait is crossed with homozygous recessive individual of its type, the phenotype ratio is

    A
    `1:2:1`
    B
    `3:1`
    C
    `1:1:1:1`
    D
    `9:3:3:1`

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