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For the stages of the cell cycle, select...

For the stages of the cell cycle, select the correct option.
A. A chromosome is arranged at the equator - Metaphase.
B. Centromere splits and chromatids are separated - Anaphase I.
C. The pairing between homologous chromosomes takes place - Zygotene.

A

A and B

B

A and C

C

B and C

D

A, B and C

Text Solution

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The correct Answer is:
B
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Explore conceptually related problems

Name the stage of cell cycle at which one of the following events occur: (i) Chromosomes are moved to spindle equator (ii) Centromere splits and chromatids separate (iii) Pairing between homologous chromosomes takes place (iv) Crossing over between homologous chromosomes takes place

Assertion: During anaphase, centromere of each chromosome splits and chromatids separate. Reason: During anaphase, chromatids move to opposte poles.

Mathc column I with column II and select the correct option from the given codes. {:("Column I","Column II"),("Chromosomes move to equator",(i)"Pachytene"),("Centromere splits and ",(ii)"Zygotene"),("Pairing between homologous chromosomes",(iii)"Anaphase"),("Crossing over between homologous chromosomes",(iv)"Metaphase"):}

Assertion :- Segregation of genes take place during anaphase-II Reason:- Anaphase-II is associated with separation of homologous chromosomes

Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of chromatid material between non sister chromatid of homologous chromosomes.

The following statements describe events during the mitotic cell cycle. What is the correct of these events in the mitotic cell cycle ? I. chromosomes migrated to opposite poles of the spindle. II. Chromosomes arrange themselves at the equator of the spindle. III. Chromosomes condense and the number membrane disappears . IV. Centromeres divide.

What is the correct sequence of the steps given here? Also work out the process depicted in the steps (i) Homologous chromosomes move forward opposite poles of the cell: chromatids do not separte II. Chromosomes gather together at the two poles of the cell and the nuclear membranes reform III. Homologous chromosomes pair and exchange segments IV. Homologous chromosomes allign on a central plate V. the haploid cells separte completely .

Select incorrect statements. 1. Diplotene stage is not recognized by the dissolution of the synaptonemal complex. 2. Recombination nodules contain a recombinase enzyme. 3 . Interkinesis is generally short - lived . 4. In anaphase II separation of homologous chromosomes ( bivalents ) separate to opposite poles.

Identify A,B,C and D in the given diagram depicting cell cycle and select the correct option.

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