Viruses that utilize reverse transcriptase belong to the virus families Viruses that utilize reverse transcriptase belong to the virus families:. A. Retroviridae and Picornaviridae. B. Herpesviridae and Poxviridae. C. Rhabdoviridae and Herpesviridae. D. Hepadnaviridae and Retroviridae. E. Herpesviridae and Retroviridae.

D. Hepadnaviridae and Retroviridae.

Explanation:

Viruses are the infectious agents which possess the genetic material in the form of RNA or DNA.

The Virus which possess RNA as genetic material is known as the retroviruses as they perform reverse transcriptase activity and form DNA from RNA.

These retroviruses are classified into the group of viruses called the retroviridae and Hepadnaviridae based on the same genetic material and the method of replication mechanism.

Thus, Option-D is correct.

i think the answer is composed of atoms

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.