- The change in genome is usually brought about by mutation and by transfer of genes between organisms.
- Bacteria are generally haploid and genes transferred in bacterial cells don’t form zygote but partially diploid are produced called merozygotes.
- The original genome of the recipient is named as endogenote and a portion of DNA introduced from a donor cell in to the recipient cell is called exogenote.
- Variation in sequence or grouping of genetic nucleotides is called recombination and this mechanism is known as recombination mechanisms.
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