Four chromatids and two centromeres which are homologous, occurs in

Zygotene

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Diplotene

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Diakinesis

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Pachytene

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Solution

The correct option is C Zygotene
Prophase I of meiosis I is comprised of leptotene, zygotene, pachytene, diplotene, and diakinesis.
Zygotene is characterized by pairing between homologous chromosomes forming bivalents.
Each bivalent is comprised of two homologous chromosomes, while the chromosome comprises two sister chromatids joined at the centromere.
Thus, each bivalent will show four chromatids, two of which will be sister chromatids and two centromeres joining two sister chromatids of each chromosome.

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Similar questions

Question 6
A bivalent meiosis- I consists of
(a) two chromatids and one centromere
(b) two chromatids and two centromeres
(c) four chromatids and two centromeres
(d) four chromatids and four centromeres

Q. Which of the following statements hold true for bivalents?
(i) Generally a bivalent is an association of four chromatids and two centromere.
(ii) It is a homologous chromosome.
(iii) Crossing over occurs between two different kinds of bivalents.

Q. Identify the incorrect match

	Metaphase	Anaphase	Anaphase-1
1)	Chromosomes are moved to spindle equator	Daughter chromatids separate	Chromatids remain associated
2)	Chromosomes are moved to spindle equator	Centromeres are towards poles	Centromeres are towards the equator
3)	Starts with complete nuclear member disintegration	Centromeres are towards poles	Segregation of homologous chromosomes
4)	Starts with complete nuclear member disintegration	Centromeres split	Segregation of homologous chromosomes

Q. Name the stage of cell cycle at which one of the following events occurs. (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.

Q. Identify the meiotic stage in which homologous chromosomes separate while the sister chromatids remain associated at their centromeres.

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