IMMEDIATE HELP - BIOLOGY (1 Viewer)

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  • Crossing over refers to the exchange of a section of genetic material between maternal and paternal chromosomes to form new combination of characteristics in the offspring.
IS THIS WHEN FERTISLATION HAS ALREADY OCCURED OR BEFORE IN THE FORMATION OF GAMATES, AND IF THE LATTER HOW IS THEIR MATERNAL AND PATERNAL

@Hivaclibtibcharkwa
 

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