Your answer would be B. individuals moving into a population.
Imagine you live in a small village that is remote and hasn't had much contact with people from different geographical areas or other continents even. Your community will have a certain gene pool as each individual has certain genes and when the genes of every person are taken into account this leaves us with certain genes that perhaps aren't found somewhere else. Suddenly, there is a big influx of another group of people coming from one particular region with a somewhat different gene pool to this community.
After some time, these people will reproduce and create new children who will have a more diverse gene pool (if the people from the old and new community would make babies for example). This is how the gene pools would get expanded and also gene flow would occur.
Answer:
20 amino acids
Explanation:
500 amino acids have been identified in nature, but just 20 amino acids make up the proteins found in the human body.
Genetic exchange between two homologous chromosomes is called cross over
The sun gives off _solar___energy, which enters the atmosphere. Plants absorb some of the energy and perform photosynthesis to convert it into_chemical__energy in the form of sugars. Plants and the animals that eat them then turn that energy into a different form of _chemical___
energy, in the form of ATP. When plants and animals use the energy, it becomes _heat_ energy.
The energy producing process for life starts with the use of solar energy by plants in photosynthesis. Green plants takes up solar energy from the sun and uses it to manufacture sugar and oxygen gas in the presence of carbon dioxide and water. The sugar stores chemical energy.
When the food produced by plant is eaten, during cellular respiration, the ATP formed from break down of the food is used to liberate heat energy. The bond between the second phosphate element is broken down and heat energy is released from the stored chemical energy.
This gives off carbon dioxide and water as the by product.
Learn more:
Respiration and photosynthesis brainly.com/question/3437832
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