Formation of identical twins and fraternal twins, Biology

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Describe the events which lead to the formation of (a) identical twins, (b) fraternal twins.

 

(a) Identical twins are derived from the products of a one zygote which separates into two at an early stage of development.

(b) Fraternal twins result from the instantaneous fertilisation of two ova.

 


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ASSINMENT, HISTORY ON CLASSIFICATION IN BIOLOGY

HISTORY ON CLASSIFICATION IN BIOLOGY

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