Nucleus of a donor embryonal cell/somatic cell is transferred to an enucleated egg cell. Then after the formation of organism, what shall be true?
A
Organism will have extranuclear genes of the donor cell
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B
Organism will have extranuclear genes of recipient cell
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C
Organism will have extranuclear genes of both, donor and recipient cell
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D
Organism will have nuclear genes of recipient cell
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Solution
The correct option is B Organism will have extranuclear genes of recipient cell Gene present on chromosomes in the nucleus are called as nuclear genes, which follow the Mendelian biparental type of inheritance. Gene present outside the nucleus in the cytoplasm is called extranuclear or cytoplasmic genes, such as mitochondrial and chloroplast gene. These genes are inherited only from the mother. The nucleus of the donor was transferred to the enucleated recipient which states that the new organism will have nuclear genes from the donor cell. Since extranuclear genes follow cytoplasmic inheritance, the organism will have an extranuclear gene from the recipient cell.