5.
A new teopod.
A new teopod, Tp2, also dominant as Lindstrom's Tp, was discovered by Professor A. E. Marino among his
breeding stocks in a flint corn from Santa Fe, Argentina. Lindstrom's Tp is in chromosome 7 in the position gl Tp ij. The new Tp2 shows independent inheritance from genes gl and ij,
as shown by the data of the following triple backcross:
|
Tp2 |
|
gl ij |
x |
+ gl ij |
|
+ |
|
+ + |
Progeny:
|
Tp2 |
+ |
Tp2 |
+ |
Tp2 |
+ |
Tp2 |
+ |
|
|
gl |
+ |
+ |
gl |
gl |
+ |
+ |
gl |
Total |
|
ij |
+ |
+ |
ij |
+ |
ij |
ij |
+ |
|
|
22 |
15 |
23 |
14 |
5 |
2 |
1 |
1 |
83 |
|
Recombinations |
gl ‑ ij = 10.8% |
|
" |
Tp2‑ gl
= 53.0% |
|
" |
Tp2‑ ij
= 47.0%. |