What does the term chiasma refer to?

1 Answer
Meave60
Jan 23, 2018

A chiasma is a point of attachment between non-sister chromatids during prophase I of meiosis at which crossing-over occurs, allowing for the exchange of parts of chromosomes (DNA).

Explanation:

http://www.web-books.com/MoBio/Free/Ch8D1.htm
DNA crossover. (a) Two homologous pairs of sister chromatids align side by side (one maternal and one paternal). (b) The two homologs are connected at a certain point called chiasma. (c) The two homologs exchange the DNA segment from the chiasma to the end of chromosomes.

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