Appendix E 



445 



Phenotypes = 3 TTLL, 6 TTLl, 3 TTll, 1 ttLL, 2 ttLl, 1 till 



Genotypes = 1 TTLL, 1 TTtf, 1 tfLL, 1 till, 2 TTLl, 2 Ttll, 

 2 Ttll, 2 ttLl, and 4 m/. 



What visible types would be produced if incomplete dominance 

 occurred in both characters? 

 Problem 8. - 



Self-fertilize-Tall, intermediate (TTLl). This is a pure tall, 

 hence all of its progeny will be tall. 



POLLEN GRAINS 

 TL Tl 



EGG CELLS 



TL 



Tl 



Phenotypes = 1 TTLL, 2 TTLl, 1 TTll. 

 Genotypes = 1 TTll, 2 TTLl, 1 TTll. 



EXERCISE 17 

 Ear-to-Row Test with Corn 



Field Practicum 



Purpose. To demonstrate to the student the method of 

 testing out the transmitting power of individual plants; to 

 show him how a breeding plot should be arranged for corn ; to 

 teach him how to harvest the corn and make notes on which 

 to base his selections. A practical demonstration of the method 

 of pure line selection. 



Materials. For each student a sack for holding ears, wired 

 tags and strings for tying sacks, and sheets for taking data. A 

 wooden rack with spikes for drying ears of corn. Grocery scales 

 for weighing the ears from each row. 



