The complex formed by a pair of synapsed homologous chromosomes is called:
Correct answer: A. Bivalent
- A. Bivalent
- B. Axoneme
- C. Equatorial plate
- D. Kinetochore
Explanation
During the 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 a complex structure called the synaptonemal complex. The complex formed by a pair of synapsed homologous chromosomes is called a bivalent or a tetrad.
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