68 Mendel's Experiments 



The artificially fertilised seeds were sown together with 

 several seeds of both original stocks, arid the most vigorous 

 examples were chosen for the reciprocal crossing. There 

 were fertilised : 



1. The hybrids with the pollen of AB. 



2. The hybrids ab. 



3. AB the hybrids. 



4. ab ,, the hybrids. 



For each of these four experiments the whole of the 

 flowers on three plants were fertilised. If the above theory 

 be correct, there must be developed on the hybrids egg and 

 pollen cells of the forms AB, Ab, aB, ab, and there would 

 be combined : 



1. The egg cells AB, Ab, aB, ab with the pollen 

 cells AB. 



2. The egg cells AB, Ab, aB, ab with the pollen 

 cells ab. 



3. The egg cells AB with the pollen cells AB, Ab, 

 aB, ab. 



4. The egg cells ab with the pollen cells AB, Ab, 

 aB, ab. 



From each of these experiments there could then result 

 only the following forms : 



1. AB, ABb, AaB, AaBb. 



2. AaBb, Aab, aBb, ab. 



3. AB, ABb, AaB, AaBb. 



4. AaBb, Aab, aBb, ab. 







If, furthermore, the several forms of the egg and pollen 

 cells of the hybrids were produced on an average in equal 

 numbers, then in each experiment the said four combinations 



