Cross over is the first way genes are shuffled to give rise to genetic diversity. Cross over takes place in sexual reproduction. The normal way that cross over occurs is chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other.
If they break the pieces at the same locus in the sequence of base pairs, the result is an exchange of genes called genetic recombination and it ensures that the daughter cells produced have a different genetic makeup from the parent cell and thus diversity occurs.
B.https://www.mansfieldct.org/Schools/MMS/staff/hand/genNaturalselection06.htm this is where I got my source.
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the photo is just black i cant help you like that
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A. Kidney
It is one of the major organs
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The nucleus contains the cell 's DNA and directs the synthesis of ribosomes and proteins. ... Ribosomes are large complexes of protein and ribonucleic acid responsible for protein synthesis when DNA from the nucleus is transcribed.
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