marks the site where crossing over had
occurred
(1)Diakinesis
(2)Synapsis
(3Y Chiasmata
(4)Leptotene
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1
Answer:
The pair of chromosomes come together in a process called synapsis which occurs in the pachytene phase of prophase 1 of meiosis
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The correct answer is option (3) Chiasmata.
- A chiasma is the point of contact, the physical link, between two chromatids belonging to homologous chromosomes.
- At a given chiasma, an exchange of genetic material can occur between both chromatids, what is called a chromosomal crossover, but this is much more frequent during meiosis than mitosis.
- So, Chiasmata marks the site where crossing over had occurred.
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