Answer:
If the lac enzyme continues to be produced even in the absence of lactose, the cell will be expending energy unnecessarily and this will be a problem for the supply of energy for other metabolic processes.
If the lac operator gene is dragged to any stretch of DNA, that gene may provide an inadequate reading generating a mutation.
Explanation:
The lac operon is an essential molecule for the transport and metabolism of lactose in microorganisms. This molecule has a fundamental function in the life of these single-celled organisms and must be synthesized immediately when lactose is present in the organism, however, its synthesis must be stopped as soon as the lactose is metabolized, otherwise the cell can spend energy unnecessarily preventing others Metabolic processes take place, which is a big problem if you only have one cell.
In addition, if for some reason, the lac operon gene is dragged on the DNA strand, an incorrect reading of the DNA bases can occur, which can cause mutations.
The RDA for protein increases by an additional 25 grams per day during pregnancy. Protein RDAs are calculated using 0.8 grams of protein per kilogram of body weight, which means an adult weighing 68 kilograms needs at least 54 grams of proteins each day . The RDA for pregnant and nursing women is a bit higher because of the protein needed for the growth of fetus, it is about 71 grams of protein per day.
The answer is: <span>A- Genes for body and wing size were on the same chromosome and inherited together</span>
Answer:
C-50% long 50% medium 0% short
Answer: D. Extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted.
