Answer:
B) a DNA base substitution in gametes during meiosis
Explanation:
In meiosis I, the pair of homologous chromosomes separate from each other so that the entire red-long homolog will move one direction and the entire yellow-long homolog will move in the other direction.
<span>If a cell ended up with both homologs, that would be the result of nondisjunction. The gametes formed from that cell will up with 2 copies of the long chromosome. The gametes formed from the other cell from meiosis I will end up with no copies of that chromosome.</span>
Answer;
Hot & Dry conditions
Explanation;
-C4 is the alternative pathway of Calvin cycle (C3 cycle) taking place during the dark phase (light-independent stage) of photosynthesis. In the C4 cycle the first stable compound is 4 carbon compound, namely oxaloacetic acid. Hence it is called C4 cycle. It is a process of carbon dioxide fixation.
-C3 plants have the disadvantage that in hot dry conditions their photosynthetic efficiency suffers because of a process called photorespiration. When the CO2 concentration in the chloroplasts drops below about 50 ppm, the catalyst rubisco that helps to fix carbon begins to fix oxygen instead.
-The problem of photorespiration is overcome in C4 plants by a two-stage strategy that keeps CO2 high and oxygen low in the chloroplast where the Calvin cycle operates.
That something the is just observation so what you think
Answer:
Explanation:Ss
Because
The gene snails of a population consists of all the copies of all the genes in that population.
