Mitosis doesn't bring genetic variety to species. Mitosis just copies DNA from one cell to a new one.
Mitosis has one cycle of cell division, in which cells replicate.
Meiosis has two cycles of cell division, in which sex cells are created.
These sex cells are not used to heal the body.
Answer:
the correct sequence of the events happened during nerve impulse is (d): 2,1,4,3
Explanation:
Originally K+ ions remains inward the membranes while Na+ ions remains outward to maintain a resting potential of membrane.
Upon stimuli Sodium channels open on membrane and Na+ diffuses inward leading to the depolarization of membrane that is it becoming more positive due to Na+ and K+ ions.
To regain it polarized state or in repolarization state Potassium channels open and K+ begun to diffuse outward while Sodium channels gets closed and Na+ ions remains inside the membrane.
Potassium channels are not efficient as compared to Sodium Channels, so an excess amount of K+ion move outward so Hyperpolarization state achieved.
As the both ions are on the wrong side and will not be available for the next nerve impulse. Hence in Refractory period by the help of Na+/K+ pum, both ions move back to their original place and membrane achieve its resting membrane potential state.
my answer would be the 3rd one
my bad if i'm wrong
I believe the answer will be D.
Adding those organic materials back into the soil helps it become rich in nutrients that have been used in order to grow the plants to begin with.
I hope I was able to help. Best of luck!
All of the above.
Genetic engineering: Has been employed mostly with mice, because their genetic makeup is well known and Involves direct manipulation of an organism's genes or their effects.
<h3>What is genetic engineering used for?</h3>
Genetic engineering, often known as genetic alteration, is a technique that modifies an organism's DNA using technology developed in labs. This could entail altering a single base pair (A-T or C-G), erasing a section of DNA, or incorporating new DNA.
Scientists can transfer desirable genes from one plant or animal to another via genetic engineering. Likewise, genes can be transferred from an animal to a plant or the opposite. GMOs, or genetically modified organisms, are another term for this.
Learn more about genetic engineering here:
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