Question

what is genetic drift, gene flow,natural selection,geographical location for class 10?

Answer 1

Genetic Drift: Genetic drift is the variation in gene frequencies within a population which can occur by chance. Sometimes without any reason some individuals may leave few more offspring than the other individuals. As a result the genes of that specific individual will automatically express maximum in the next generations. This is genetic drift. In a small and isolated population genetic drift may be an important mechanism of evolution.

Gene Flow: The transfer of alleles or genes from one population to another is called gene flow. It is also known as gene migration. Gene flow depends upon the mobility of the organisms. Animals are more mobile than plants. In plants gene flow occurs by transfer of pollens and grains by insects, animals, birds, wind or water.

Natural Selection: A brilliant naturalist Charles Darwin gave the theory of natural selection which means all species have evolved from a single ancestor over time. Some are able to survive, some are not. According to Darwin nature is soul responsible for this selection. The organisms with characters that are helpful for successful reproduction are selected by the nature and they are capable of exceeding their generations whereas the organisms which have unfavorable characters will not be selected by nature and cannot reproduce. Gradually they get extinct from the nature. 

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Answer 2

Explanation:

1. Genetic drift- is the random process which changes the frequency of the alleles in a population. The process is observed in the small population and the allele frequency changes by chances like by any catastrophic conditions.

2. Gene flow- Gene flow refer to the movement of the alleles between two or more population. The gene flow occurs due to immigration, migration and chances. This also changes the gene frequency of a population

3. Natural selection- is the mechanism by which the organisms evolve on the Earth. The organism evolves when the natural pressure forces the organism to evolve and then selects the most favoured adaptive organism.

To learn more:

1. Genetic drift: https://brainly.in/question/8042023

2. Natural selection: https://brainly.in/question/3032314