The correct answer is A. Lac repressor.
Lac repressor prevents lac gene which are found in the DNA of Escherichia Coli from being expressed for many times.
Lac repressor is termed as DNA which binds proteins. It allows the expression of genes from coding which are made for proteins to be involved in metabolism of lactose which is in bacteria.
When there is no lactose which is available in the cell, then the genes are being repressed. Lactose are being converted to allolactose if they are available.
Answer: I would say its probably A I'm not sure but that might be it
Explanation:
The answer is C hope this helps!
Answer - C
Snakes periodically shed their skin in order to regrow new skin. Birds migrating to the south and bears hibernating are also a result of normal periodic transitions. However, extinction of a type of shrimp is most likely a result of a drastic change in the environment.
The given analogy is based on the type of reproduction process or cell multiplication mode in prokaryotes and eukaryotes. Hence the eukaryotes reproduce by mitosis and the prokaryotes multiply by budding and binary fission. Hence the correct answer is option C. Both binary fission and budding.