The synaptonemal complex is visible under

A.      Light microwave

B.      Electron microscope

C.      Compound microscope

D.     Simple microscope

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The synapsed homologous chromosomes form

A.      Tetrad

B.      Bivalent

C.      Both A and B

D.     Diad

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Bivalent is clearly visible at which stage?

A.      Pachytene

B.      Leptotene

C.      Zygotene

D.     Diplotene

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Which of the following is the shortest phase among the following?

A.      Prophase l

B.      Zygotene

C.      Pachytene

D.     Both A and B

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The appearance of recombination nodule is  a characteristic feature of

A.      Pachytene

B.      Zygotene

C.      Diplotene

D.     Diakinesis

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Recombination nodules are

A.      Sites over sister chromatids

B.      Sites over non-sister chromatids

C.      Sites over homologous chromosomes

D.     Sites over non-homologous chromosomes

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Which of the following is an enzyme mediated process?

A.      Crossing over

B.      Synapsis

C.      Leptotene

D.     Both A and B

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Recombination of genetic material occurs

A.      Because of synapsis

B.      Because of crossing over

C.      Because of termination of chiasmata

D.     Because of X Shaped structure

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Recombination completion leads to

A.      Chromosomes attached to each other at centromere

B.      Chromosomes attached to each other at sites of crossing over in the sister chromatids

C.      Chromosomes linked at the sites of crossing over

D.     Both A and C

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Recombination completes in

A.      The end of pachytene

B.      Just before the end of pachytene

C.      the end of midphase of pachytene

D.     End of zygotene

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