Which is the term for replicating circular pieces of dna that often carry antibiotic-resistant genes?
a. vectors
b. viruses
c. bacteriophages
d. plasmids

d. plasmid

Explanation: Plasmid is the circular DNA, self-replicating and different from chromosomal DNA. Plasmid consist of an antibiotic-resistant gene means it is able to resist the results of an antibiotic so that they were once sensitive. Some of the antibiotic resistance genes are kanamycin and tetracycline.

Hence, Plasmid is the replicating pieces of DNA that carry the antibiotic resistant gene.

velocity and height

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.