During meiosis I, the chromosomes start pairing at the:
Correct answer: A. Zygotene
- A. Zygotene
- B. Pachytene
- C. Diplotene
- D. Leptotene
Explanation
During zygotene or zygonema of meiotic prophase I the chromosomes become shorter and thicker. The homologous chromosomes come to lie side by side in pairs. This pairing of homologous chromosomes is known as synapsis or syndesis. A pair of homologous chromosomes lying together is called a bivalent.
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