The flower colors of plants in a particular population may be blue, purple, turquoise, light blue, or white. A series of crosses between different members of the population produced the following results:

Cross ................................................ Parents .................................................. Progeny
1 .......................................................... Purple × blue................................................  All purple
2 ..........................................................Purple × purple ............................................. 76 purple, 25 turquoise
3 ..........................................................Blue × blue ..................................................... 86 blue, 29 turquoise
4 ..........................................................Purple × turquoise ........................................ 49 purple, 52 turquoise
5 ..........................................................Purple × purple..............................................  69 purple, 22 blue
6 ......................................................... Purple × blue .................................................. 50 purple, 51 blue
7 ......................................................... Purple × blue .................................................. 54 purple, 26 blue,
........................................................................................................................................25 turquoise
8 ......................................................... Turquoise × turquoise..................................... All turquoise
9 .......................................................... Purple × blue ..................................................49 purple, 25 blue,
....................................................................................................................................... 23 light blue
10 ........................................................ Light blue × light............................................  blue 60 light blue,
........................................................................................................................................ 29 turquoise, 31 white
11 .......................................................  Turquoise × white .......................................... All light blue
12 ........................................................ White × white ................................................. All white
13 ........................................................  Purple × white................................................ All purple

How many genes and alleles are involved in the inheritance of flower color? Indicate all possible genotypes for the following phenotypes: 

(a) purple; 

(b) blue; 

(c) turquoise; 

(d) light blue; 

(e) white.