When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. In other words this occurs when heterozyhotes have increased fitness over both homozygotes. A good example is sickcle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.
B Since protons and electrons have to be the same amount!
The right answer is B.
Nitrogen fixation is done by decomposers that are prokaryotes (bacteria).
<u>Take the example of legumes.
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The different species of rhizobia bacteria, which are able to infect the roots of legumes (Fabaceae family), are specific to certain host plants. Rhizobium phaseoli infects beans (Phaseolus sp).
Bacteria cause the formation of nodules on the roots by penetrating the root hairs, and transform into larger "bacteroids". The nodules are the seat of a symbiotic activity in which the plant provides the sugars and energy from photosynthesis, and in return benefits from the amino acids that are produced there.
Answer:
Axon also called nerve fiber carries information away from the central nervous system
Explanation:
Neurons have their own structure whose main parts are the nucleus, cell body, and dendrites. There are many connections between neurons thanks to axons or small branches.
Axons help create a network whose function is to transmit messages from neuron to neuron. This process is called a synapse, which is the joining of axons to pulses with a velocity of 0.001 seconds.
The answer is inflammatory response. T –suppressor (now referred to as T-regulatory cells) are significant in the negative feedback loop in inflammation. Therefore they downregulate inflammation when an infection has been eliminated. Only when there is an infection in the body does other factors reduce the suppression by Tregs.
