In the absence of lactose, the repressor remains bound to the operator and preventing access of the RNA polymerase to the promoter. Transcription is blocked and the operon is repressed. In the presence of lactose, the repressor is inactivated form and does not bind to the operator.
Answer: Phenotype
Explanation:
Phenotype refers to the total physically observable feature of an organism. it include hair color, height, body size etc
Cells are called the building blocks of life because they are the basic unit for all living organisms, and must be present for life to exist. ... The tiny parts of each cell are called organelles, which means "little organs" in Latin. Each cell in the human body is a small and simple form of life.
The best synonym for vales in the lines "By the stream & o'er the mead..Making all the vales rejoice!" from The Lamb will be valleys. The correct answer is C.
