Genetic variation is a measure of the genetic differences that exist within a population. The genetic variation of an entire species is often called genetic diversity. Genetic variations are the differences in DNA segments or genes between individuals and each variation of a gene is called an allele.For example, a population with many different alleles at a single chromosome locus has a high amount of genetic variation. Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population.
Answer:
a. At the cytosol surface
Explanation:
- The G protein coupled receptors have seven transmembrane alpha helices and because of this they are able to pass through the cell membrane seven times.
- Like every protein, this receptor also has to terminals - one is the N-terminus and the other is the C-terminus.
- The N-terminus is the amino end of the receptor whereas the C-terminus is the carboxyl end of the receptor.
- The N-terminus lies on the extracellular side and then it crosses the membrane 7 times such that the C-terminus faces the inside that is towards the cytosol.
- The fact that the loop on the cytosol side between helices 5 and 6 helps us to know that the 7th loop must go outside and by coming back in the C-terminus would eventually face the cytosol.
The question is incomplete as it does not have the options which are-
a) plasticity.
b) lateralization.
c) pruning.
d) myelination.
Answer:
a) plasticity.
Explanation:
Neuroplasticity is the ability of the mind to the adapt which involves the physiological responses in the brain. This ability of the brain arises due to the fact that the brain continually reorganizes the neuronal connection from the uterus to the death which allows us to learn and experience various things with the same capacity of the mine.
The changes in the physiology of the brain due to neuroplasticity allows to survive in different conditions, learn new thing and experience new events which show the effect on the behaviour of the person.
Thus, a) plasticity is the correct answer.
Urochordata is another invertebrate other than hagfish.
<span>Wetlands help reduce erosion through B. sediment trapping.
Soil and rocks are trapped and then there is no erosion or crumbing of the ground and rocks.
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