What is karyotyping?
a. a method of illustrating what chromosomes are present.
b. a method of separating dna fragments so they can be seen.
c. a method of making one dna sample into many copies.
d. a method of cutting strands of dna at specific sites.

C. A method of making one DNA sample into many copies.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.