describe the prophase I stage of meiosis using homologous chromosomes, synapsis, crossing over and chiasmata. what is the significance of second meiotic division.
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-Prophase I,homologous chromosomes further condense and pair.Crossing-over occurs.Spindle fibres form between centrioles,which moves towards opposite poles.
Significance of second meiotic division
1)Due to crossing over it provides an opportunity for exchange of genes/genetical variation.
2)It maintains definite and constant chromosome number in all organism.
3)Provides physical basis for segregation and independent asssortment.
Significance of second meiotic division
1)Due to crossing over it provides an opportunity for exchange of genes/genetical variation.
2)It maintains definite and constant chromosome number in all organism.
3)Provides physical basis for segregation and independent asssortment.
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