Question

Regulated unit of genetic material is termed as:
A. Operon
B. Regulator gene
C. Operator gene
D. Okazaki segment

Answer 1

Hint: Gene regulation is important for an individual's growth, development, differentiation, and even survival. The main genetic material is considered DNA while in some like retrovirus genetic material is RNA. The regulated unit of genetic material can be turned on or off.

Complete Step by Step Answer:
Operons seem to be segments of genetic material that act as regulated units which can be turned on and off. One to several structural genes makes up an operon.
The procedure of gene expression is regulated by an operon, which is a functional unit of DNA. An operon is made up of a promoter, an operator, and one to two significant genes. Such genes all operate together as functional units, and also structural genes are just the DNA sequences that will be transcribed as well as expressed as a protein.
During replication of DNA, Okazaki segments are formed. On the lagging strand, the DNA polymerase creates discontinuous short DNA segments referred to as Okazaki fragments in the 5'-3' direction. The Okazaki fragments are joined together by enzyme DNA ligase to create a continuous complementary strand.

Hence, the correct option is A


Note: Operons exist in prokaryotes (bacteria and archaea) but not in eukaryotes. Multiple operons can be regulated by the same regulatory protein, in these situations, the operons form a regulon.