Ans.
Lac (lactose) operon in a type of bacterial operon, which shows a cluster of genes that are regulated by a single promoter. It is composed of an operator, promoter, a terminator, and three structural genes (lacA, lacY, and lacZ), which are responsible for the transport and breakdown of lactose.
The lac operon is an inducible operon as it gets activated in the presence of lactose and expressed its functional genes in the form of proteins (or enzymes) for lactose metabolism.
Thus, the correct answer to be fill in first blank is 'inducible' and in second blank is 'lactose.'
Answer:
Cats and dogs are both mammals because they have hair, are warm-blooded, and nourish their young with milk. Dogs and cats are distinct species, incapable of producing offspring together because of the many differences in their genome.
Explanation:
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Answer:
1:-answer is A
2:-answer is B
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Answer:
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Explanation:
Estuaries are among the world's most productive ecosystems. Estuaries are essential to the success of numerous fish and shellfish species of great commercial, ecological, and recreational importance. Estuaries are also the focal points for pollutants entering the sea from the land, and are now the most nutrient-enriched ecosystems on earth.
