Meiosis results in independent assortment of maternal and paternal chromosomes. If 2n=6 for a given organism, and there is no crossing over, what is the chance that a gamete produced by this diploid organism will receive only paternal chromosomes?

The diploid organism produced if receives only paternal chromosomes will have no genetic variation if no crossing over takes place.

Explanation:

There will be 50% chance of receiving paternal chromosomes in the child if no crossing over takes place. Crossing over is the event in which homologous non-sisiter chromatids exchange the genetic information.

The crossing over creates a recombinant chromosome which will have unique allele combination. This results in no genetic variation and the resultant offspring will be receiving either maternal or paternal chromosomes as it is.

The occurrence of no genetic variation would cause increased chances of not surviving due to some inheritable traits of diseases. The immunity gained by the individual in the disease or so will not be passed if it is maternal.

The sister chromatids will remain same with no variation and the chromosome passed on to the child will have exactly the same genes as of father.

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