Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 10. Cell cycle and cell division1 Mark
MCQ
The complex formed by a pair of synapsed homologous chromosomes is called
✓
bivalent
B
axoneme
C
equatorial plate
D
kinetochore.
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Answer
Correct option: A.
bivalent
a (a) : During zygotene stage chromosomes start pairing together and this process of association is called synapsis. Such paired chromosomes are called homologous chromosomes. Electron micrographs of this stage indicate that chromosome synapsis is accompanied by the formation of complex structure called synaptonemal complex. The complex formed by a pair of synapsed homologous chromosomes is called a bivalent or a tetrad.
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