Question

The study of chromosomes at meiotic diplotene shows that:

• A. The intimately paired chromosomes completely separate from each other
• B. The pairing of homologous chromosomes which had initiated in the earlier stage is completed
• C. The homologous chromosomes remain united by chiasmata
• D. None of the above

Answer 1

The correct option is C The homologous chromosomes remain united by chiasmata

During diplotene stage, chromatids become clear and the bivalents are now called as tetrads. At places, homologous chromosomes remain attached to each other. The points of attachment between non-sister chromatids of two homologous chromosomes are called chiasmata. Hence, the study of chromosomes at meiotic diplotene shows homologous chromosomes united by chiasmata.