mendel succeeded in discovering the basic laws of inheritance while many people before him had failed. which of the following contributed to his success? check all that apply.
1-He simplified the problem by looking at only one or two traits at a time.
2-He focused on traits that existed in two easily distinguishable forms.
3-He was the first to quantitatively examine the behavior of chromosomes during the formation of gametes.
4-He chose an organism where many pure varieties were available.
5-He chose an organism that was easy to grow and that had a short generation time.
6-He chose an organism that had a few large chromosomes rather than many small chromosomes.
7-He collected quantitative data and mathematically analyzed his results.
8-He examined large numbers (hundreds) of offspring over several generations. -
9-He was the first to produce hybrids by crossing different varieties of the same species.
10-He chose an organism where he could easily control whether self-fertilization or cross-fertilization took place.
11-He was the first to study the DNA of the organisms he crossed rather than just their external appearance.