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    				| 1. | What is sex determination ? explain the machanis of sx determination and human be | 
| Answer» 
 Sex determination in humans is of XX-XY types. Human has total 23 pairs of chromosomes; 22 pairs of autosomes and ONE pair of sex chromosomes. ... Fertilization of egg (22 + X) with a SPERM carrying 22+Y chromosomes results in a male CHILD (44A + XY) 
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