Cell Cycle and Cell Division Question 20

20. The complex formed by a pair of synapsed homologous chromosomes is called

[NEET 2013]

(a) Kinetochore

(b) Bivalent

(c) Axoneme

(d) Equatorial plate

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Answer : b

Hints & Solutions

(b) During zygotene, second stage of meiosis I, homologous chromosomes start pairing together forming a complex structure called synaptonemal complex. The complex formed by a pair of synapsed homologous chromosome is called a bivalent or a tetrad. Crossing over occurs between non sister chromatids of bivalent in the next stage.