The disadvantage of parthenogenesis is:

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(D) Parthenogenesis is a form of asexual reproduction where an embryo develops from an unfertilized egg. Since there is no fusion of gametes (syngamy)

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Does not encourage the appearance of new and advantageous combinations of genes

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(D) Parthenogenesis is a form of asexual reproduction where an embryo develops from an unfertilized egg. Since there is no fusion of gametes (syngamy),there is no recombination of genetic material. Consequently,the offspring are genetically identical to the parent. This lack of genetic variation means that the population cannot adapt to changing environmental conditions and does not encourage the appearance of new and advantageous combinations of genes.

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