User talk:Carla R2D2/sandbox

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It needs plenty of new photos, citations from reliable sources, adding to the table of contents, add more information, versality, improve grammar ...

PHOTOS: https://theconversation.com/in-red-and-black-the-genetics-of-ladybug-spots-104811 https://ask.extension.org/questions/298953

In this article add...genetic variations, their mechanism, prevalence, biological impact,

Find A NEW photo of genetic variation

If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection). https://ghr.nlm.nih.gov/primer/mutationsanddisorders/evolution

Random mutations are the ultimate source of genetic variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances, the new alleles can be favored by natural selection https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2871826/

https://www.genome.gov/genetics-glossary/Genetic-Variation

Darwin’s theory of the mechanism of evolution begins with the variation that exists among organisms within a species. Individuals of one generation are qualitatively different from one another. Evolution of the species as a whole results from the differential rates of survival and reproduction of the various types, so the relative frequencies of the types change over time. Evolution, in this view, is a sorting process. For Darwin, evolution of the group resulted from the differential survival and reproduction of individual variants already existing in the group—variants arising in a way unrelated to the environment but whose survival and reproduction do depend on the environment. https://www.ncbi.nlm.nih.gov/books/NBK21378/#:~:text=Darwin's%20theory%20of%20the%20mechanism,among%20organisms%20within%20a%20species.&text=Evolution%20of%20the%20species%20as,the%20types%20change%20over%20time.

Photo from Darwin