Answer:
it contains 6, the number of chromosomes in the gamete is half the number of chromosomes in the nucleus of the body cell.
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Answer:
It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Explanation:
Lac operon is also referred to as Lactose operon.This operon helps in the transport and metabolism of lactose of many enteric bacteria.
It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Due to the fact that it would be a total waste to produce enzymes when no lactose is available or if another preferable energy source such as glucose were available. The lac operon uses a two-part control mechanism to ensure that the cell uses energy producing the enzymes encoded by the lac operon only when necessary to avoid wastage and abnormalities.
Plants absorb the minerals that are found in different substances which they need to take in through roots and then use these minerals and turn them into useful compounds for their own healthy growth.
Answer:
because the ovum is made to fertilize only a sperm at a time, once a sperm enters it closes. It then divides to form twins, triplets and so on
