How many kinds of gametes will be expected from an individua
     How many kinds of gametes will be expected from an individual with the genotype PpCcTTRr?   
  
  Solution
Genotype is PpCcTTRr
Now to find out the different types of gametes produced from the above genotype, just look at the possibility of each gene pair to occur. Like
Pp, there are 2 possibilities (P and p)
Cc, there are 2 possibilities (C and c)
TT, either way we get only T, so there is only 1 possibility
Rr, there are 2 possibilities (R and r)
Now simply multiply all the possible ways = 2 X 2 X 1 X 2 = 8
Therefore there are 8 different possible gametes produced from genotype PpCcTTRr
PCTR, PCTr, PcTR, PcTr
pCTR, pCTr, pcTR, pcTr

