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12th Standard English Medium Biology (Botany) Subject Chromosomal Basis of Inheritance Creative 3 Mark Questions with Solution Part - I Question Bank Software Jun-21 , 2021

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12th Standard English Medium Biology (Botany) Subject Chromosomal Basis of Inheritance Creative 3 Mark Questions with Solution Part - I

12th Standard English Medium Biology (Botany) Subject Chromosomal Basis of Inheritance Creative 3 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Biology

Time : 00:06:00 Hrs
Total Marks : 15

    3 Marks

    5 x 3 = 15

  1. State Coupling and Repulsion theory.

  2. How crossing over differs from linkage?

  3. How and where chiasma is formed?

  4. What is recombination? Which is the widely accepted model of DNA recombination ?

  5. Given below is a sequence of alphabets representing the genes of chromosome. Observe it and answer the questions.
    A- B - C - D - E - F - G - H - I - J -K.
    (a) Write the sequence of genes after the chromosome undergoes terminal deletion of single gene.
    (b) What will be the gene sequence, if the genes Eand Fundergoes tandem duplication?
    (c) Consider the centromere is located between the genes F and G and write a gene sequence, after paracentric inversion occurs in between the genes C, D and E.

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