A) due to crossing over of same part between homologous chromosomes
B) due to crossing over of same part between non-homologous chromosomes
C) due to duplication of homologous and non-homologous chromosomes
D) due to loss of some part of chromosomes
Correct Answer: A
Solution :
During diplotene substage of meiotic division the force of attraction betwen homologous chromosomes lessen and they move apart. They do not separate completely but are held together at one or more points called chiasmata. Chiasmata are the expression of the crossing over or recombination.
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