Which of these leads to competition between two species?
a) an overlap in the two species' niches
b) an increase in genetic diversity in one species
c) the extinction of a predator species
d) an increase in available recources
answer is a^^

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.