Which of the following is a pair of transgenic organisms?

a) an amoeba and a hybridized peach tree

b) a bt corn plant and a polyploid banana tree

c) a hybridized peach tree and a polyploid banana tree

d) bacteria that make human insulin and a bt corn plant

The correct answer would be d) bacteria that make human insulin and a Bt corn plant.

An organism that contains and/or expresses a transgene or foreign gene is termed transgenic organism.

Bacteria that make human insulin contain and express human genes which code for A and B chain of insulin.

Similarly, Bt cotton is also a transgenic organism as it contains and expresses cry gene isolated from bacterium Bacillus thuringiensis. It provides pest resistance to the plant.

Thus, option d contains a pair of transgenic organisms.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.