None is the correct answer
The reasons why a rancher may plant several varieties of grass for grazing on the same ranch are for making hay where some horse owners may prefer to feed their animals with a feeding mixture of alfafa hay and timothy hay. Secondly, they plant the grasses for grazing their animals since the grasses may be having different soil conditions in different fields. lastly, the farmers may be raising different animals with varying nutritional needs.
It is a perfect example of a natural selection.
(I'm not sure if this is the exact answer that you are looking for.)
Question 4: Each parent would contribute one allele
Question 5: A white flower allele is presented in both homologous chromosomes (it would have to be in both because it is recessive)
