Answer:
An amino acid activates the repressor so that the repressor binds to the operator and prevents transcription.
Explanation:
In an operon, promoter is followed by operator which is finally followed by the structural genes to be transcribed. RNA Polymerase binds to the promoter and initiates transcription. A repressor can negatively control the transcription process by binding to the operator so that the RNA Polymerase is not able to move forward and transcription is halted.
For example: in trp operon, tryptophan amino acid binds to the repressor molecule which leads to change in repressor's shape. The repressor is now able to bind to the operator and prevent transcription.
Answer: D. Species
Explanation:
Species is a group of population in which organisms have many common characteristics and they are capable of interbreeding and producing viable fertile offsprings. The members belonging to the same class and phylum have less common characteristics if they interbreed they may not produce viable fertile offsprings. Also, the organisms of the same kingdom have least common characteristics and will not have viable fertile offsprings after interbreeding.
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▹ Answer
<em>See below.</em>
▹ Step-by-Step Explanation
Genes - parts of the DNA which control the traits of an organism
DNA - molecule that carries the genetic instructions for all living organisms. Found in the chromosome.
Nucleus - stores the cell's hereditary material or DNA
Chromosomes - Thread-like structures that are found in the nucleus of a cell that contains DNA.
Hope this helps!
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Brainliest is greatly appreciated!
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Answer:
a paper plane also known as and paper aeroplane in American English or paper aeroplane in British English is it toy aircraft usually a glider made out the single folded sheet of paper or paper boat a simple noise heavy paper plane truth like a dot is also known as paper
