Answer:
c. several genes, next to each other in prokaryotic DNA, that are transcribed as a single piece of mRNA
Explanation:
An operon is a functioning unit usually found in prokaryotes. It contains a group of genes under the control of same promoter such that when transcription occurs, these genes are transcribed together to form a single mRNA product. So the genes of an operon are either transcribed together or not transcribed at all. The mRNA formed is usually a polycistronic mRNA i.e. it codes for more than one protein.
Operon has three parts: promoter, operator and structural genes. Promoter enables the structural genes to get transcribed. Operator in turn controls promoter. It's a segment of DNA to which the repressor molecule binds.
Answer:
Sepals and petals are not directly involved in reproduction, while the stamens and pistils are the male and female reproductive organs. In addition, each flower possesses an ovary (at the base of the pistil) formed from modified leaves called carpels (note that the pistil itself is sometimes referred to as the carpel).
Explanation:
Answer:
the 2nd option is the correct option.
