Answer:
competition occurs when living organisms, including animals, plants, bacteria and fungi, need the same limited resources to thrive in their shared environment.
Explanation:
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The answer would be: It would have no effect, because tyrosine is also available from the diet
The pathway is different, alkaptonuria increased tyrosine is caused by decreased usage. In phenylketonuria, it is caused by increased production. While tyrosine is increased in phenylketonuria patient, it won't cause alkaptonuria because tyrosine could be found in the diet.
Answer:
The gene cannot be transcribed and translated into a protein.
Explanation:
Turning off a gene means the gene cannot be transcribed and translated into a protein.
Turning off of genes is a form of gene regulation, a process that controls which genes are expressed or not expressed in a cell.
<u>The expression of genes requires that they are first transcribed from DNA to mRNA in the nucleus and then moved to cytoplasm where they are translated into proteins by the ribosome.</u>
Hence, a gene that will not be expressed has to be stopped from being transcribed amd translated by being turned off by the gene regulation process of the cell.
Condons are complimentary based triplets in DNA.
Answer:
Reproductive barrier ⇒ isolation mechanism ⇒ seasonal or temporal isolation.
Explanation:
Reproductive barriers are isolation mechanisms that prevent mating between two or more species. The prezygotic mechanism avoids fertilization between individuals of different species, and the postzygotic mechanism avoids the zygote to develop and reach the adult stage.
Among the prezygotic mechanisms, we might find behavioral isolation, seasonal or temporal isolation, sexual isolation, gamete incompatibility.
Seasonal or temporal isolation occurs when individuals of different species occupy the same area, have the same reproductive behavior, and their gametes are compatible, but they do not get to mate because their reproductive seasons differ.
In the exposed example, after the speciation process, both bird species living together are not capable of mating because one of the species mates in the spring and the other one breeds in fall.
