Q.
The complex formed by a pair of synapsed homologous chromosomes is called
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a
bivalent
b
axoneme
c
equatorial plate
d
kinetochore
answer is A.
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Detailed Solution
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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