Answer:
b. An operon is a region of DNA that codes for a series of functionally related genes under the control of the same promoter
Explanation:
An operon is usually found in prokaryotic organisms. It refers to the functional structure within prokaryotic genome in which multiple different genes are under the control of one promotor. All of the genes are transcribed together which leads to the formation of polycistronic mRNA. Polycistronic mRNA migh undergo splicing to create monocistronic mRNAs which will be translated separately into few products (proteins).
Answer:
The correct answer will be option- C.
Explanation:
The endo-symbiotic theory was given by Lynn Margilus in 1967 which explained the origin of complex eukaryote from simple prokaryotes.
The endosymbiotic theory stated that a eukaryote became complex after the ingestion of prokaryotic cells which became permanent which proved useful to each other.
The presence of mitochondria is evidence supporting the endosymbiosis which is thought to have evolved from a prokaryotic chemosynthetic bacteria in past.
Thus, option- C is the correct answer.
As phosphorus is in need of 3 electrons to gain a stable valence electron configuration, its most likely to bond covalently; share valence electrons with another atom to become stable.
Your question isn’t clear though each body system holds its prime importance.
