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What is a three point test cross?...

What is a three point test cross?

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What is the advantage of a three point test cross?

Accurate mapping of genes can be done by three point test cross because increases ................. .

Knowledge Check

  • Accurate mapping of genes can be done by three point test cross because increases

    A
    Possibility of single cross over
    B
    Possibility of double cross over
    C
    Possibility of multiple cross over
    D
    Possibility of recombination frequency

  • Identify the incorrect statements from the below (I) Incomplete linkage 1:1:1:1 ratio is not obtained in test cross. (II) Synaptonemal complex prevents crossing over in Drosophila. (III) Crossing over is the reason for incomplete linkage. (IV) The horizontal cut will not create recombinants according to Robin Holliday.

    A
    I, II and IV
    B
    I and IV
    C
    III and IV
    D
    I, III and IV

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    (i) What is the name of this test cross ? (ii) How will you construct gene mapping from the above given data ? (iii) Find out the correct order of genes.

    What is test cross ?

    Choose the correct statement(s). (I) Incomplete linkage 1:1:1:1 ratio is not obtained in test cross. (II) Synaptonemal complex prevents crossing over in Drosopilla (III) The horizontal cut will not create recombinants according to Robin Holliday. (IV) crossing over is the reason for incomplete linkage

    What is homozygous tall test cross?

    All test crosses are back cross. But all back crosses are not test cross'. Justify the statement.

    Prove that any three points on a circle cannot be collinear.

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