Answer:
Some insects with Bt resistance genes are able to survive in the presence of Bt toxin. Natural selection favors these insects and increases their proportion in future generations.
Explanation:
Some of the insects in the insect population have one or more genes that impart Bt resistance to them. These insects are able to survive in the presence of Bt toxin while the ones that lack these genes simply die by Bt toxin. Natural selection allows these insects to leave more progeny in the future generation which in turn results in increased frequency of the Bt resistance gene in the future populations. This results in the spread of Bt resistance among insect populations.
Answer:
Explanation:
Graves' disease is an autoimmune disorder in which antibodies produced by your immune system stimulate your thyroid to produce too much T4. It's the most common cause of hyperthyroidism. Hyperfunctioning thyroid nodules (toxic adenoma, toxic multinodular goiter or Plummer's disease).
Reptiles differ from other animals because the are cold-blooded animals, have scaly, tough, and dry skin. Snakes, turtles, crocadails are all examples of reptiles.
Answer:
cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Explanation:
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