Do all the gametes formed from a parent organism have same genetic composition ( identical DNA copies) of parent genome. Analyse the situation with background of gametogenesis & give a suitable explaination
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Please find below the solution to the asked query
No, all the gametes formed from the parent do not have same genetic composition i.e they do not posses identical DNA copies of parent genome. This can be understood by the process of gametogenesis in diploid organisms like gymnosperms, angiosperms, animals including humans in which gametes are produced from meiocytes (gamete mother cells) by meiotic division. In the pachytene and diplotene stage of meiosis I, the crossing over takes place. It results in the exchange of DNA between homologous chromosomes. This exchange of DNA results in the development of many new combinations of the DNA sequences in gametes. As a result, the gametes posses genome with many variations.
Hope this information will clear your doubts about the gametes.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards
Please find below the solution to the asked query
No, all the gametes formed from the parent do not have same genetic composition i.e they do not posses identical DNA copies of parent genome. This can be understood by the process of gametogenesis in diploid organisms like gymnosperms, angiosperms, animals including humans in which gametes are produced from meiocytes (gamete mother cells) by meiotic division. In the pachytene and diplotene stage of meiosis I, the crossing over takes place. It results in the exchange of DNA between homologous chromosomes. This exchange of DNA results in the development of many new combinations of the DNA sequences in gametes. As a result, the gametes posses genome with many variations.
Hope this information will clear your doubts about the gametes.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards