AP Biology Help!!!!!!!!

Question

Why did Gregor Mendel perform thousands of crosses between the same two plants, essentially running the same experiment over and over?

a. He wanted to be sure that his parental plants were true breeding.

b. He had difficulty keeping track of his plants.

c. The more crosses he did, the more mathematically accurate his results would be.

d. He wanted to be sure that he had attained all possible results

Answer 1

A.

Keep in mind that Mendel was a mathematician.  He had a working knowledge of inheritance as he knew (he had taken and loved botany in college and also, due to his love of cigars, selectively bred and grew tobacco plants to make his own) that there was a transference and combining of cells in organisms that reproduced sexually.  

He was curious about what would happen if you started a breeding process with true breeding plants and to do that, he did ANSWER A.  

He determined the remainder of his thesis based on mathematics.

Answer 2

to get the best ratio in the punnett square, you need a large number of tests-the more the better.

Answer 3

C..  In any experiment you would need to run many trials.  This will ensure that the results received was not a fluke.  After the first mating Mendel could have preformed a test cross to determine if the parents were pure breeding.  He did not have to go overboard as stated in the question.