You examine the karyotype of a chromosomally normal human male. You pick out two specific chromosomes: the Y chromosome and a particular copy of autosome 9. What are the chances that this individual received this particular Y chromosome from his father and this particular autosome 9 from his mother? a) 0% b) 25% c) 50% d) 75% e) 100%
ok so is there a 100% chance the Y is from the father?
and a 50% chance of the autosome from the mother?
now what?
ok so is there a 100% chance the Y is from the father?
and a 50% chance of the autosome from the mother?
now what?
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Yes you are correct, so the final probability is 1 x 0.5 = 0.5 or 50%, as the only variation is in the inheritance of autosome 9.
Nothing more to it than that - whenever you see AND in probability statistics just multiply.
Nothing more to it than that - whenever you see AND in probability statistics just multiply.