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Were Genetic Changes Random Back Then?

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Have you ever wondered if there were more species than there used to be today? Were the genetic changes random back then? Many changes may occur in an organism’s DNA over time in order to survive based on changes in their surroundings. This is what makes one generation different from another generation which can result in a whole new species.
Genetic changes were not random back then. Not all changes took place at the same rate either. The X chromosome proved to be more stable than chromosome III and has remained large throughout evolution. The X chromosome is found twice in females and once in males, while the Y chromosome lost most of its genetic material early in its evolution and is found only once in males and not at all in females. The X chromosome has more than 1000 genes, while the Y chromosome has less than 200 genes. How might this happen? …show more content…

When two populations no longer interbreed this causes evolution of two separate species. This may be caused by behavioral isolation, geographic isolation, or temporal isolation. If they become so different they will no longer be able to interbreed because each organism will have a different number of chromosomes, so the genetic information from the male can’t find a proper match with the genetic information from the female. When this occurs the population of that organism can decrease.
Why would organisms change their DNA? They change their DNA to adapt more to their environment to survive. This is called Natural Selection. First of all, they need to change their DNA in order to adapt to their environment. Second, they need to adapt to survive. Finally, they adapt to produce more offspring. Changing their DNA to improve their chance of survival is what makes the next generation so different from the previous generation which can even result in a whole new

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In Neil Shubin’s book Your Inner Fish the genetic blueprint of human life, and all animal life, is revealed. The book’s main message is that everything, every feature humans or any other animal can have, is part of the same genetic history. The features and mechanisms that make up our bodies have evolved through “descent with modification” over time. Slight changes to cells, bones, and genes have all culminated into new species that while different still carry reminders of their evolutionary past. When most learn of evolution they learn humans and primates evolved from a common ancestor, and they stop there, they do not look any further.

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Are you interested in the evolution of the modern day species and how they have changed from thousands of years ago? Scientists and many people say it's because of evolution. Evolution is when different kinds of organisms have developed from earlier forms during the history of the earth. There are a lot of reasons and explanations why species have changed do to adaptation, competition, and history are all big factors.

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As the penman predicted, the mankind is now in the process of putting on the analogous paradigm to the control of mother nature (Mazzoni). Literally speaking, people are now engineering nature. They try to create and produce new forms of life by making interventions on the microcosmic level. With genetic modification, people climb to a new, highest level of genetics. The cloning industry as well as genetic engineering are advancing so fast that it would only take a short time until people would feel the power and would misuse them on their own account (Schumacher).

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(Pg7) If there is no diversity how can people change? When the people in this society leave no chance for change they stop all chance of growth. The reason for this is because when they genetically engineered these embryos they cut out all chance for mutations, although; they are taking away diseases and bad things. This means there that people will eventually die off if they don’t change because of natural selection. With these people doing this they are toying with nature.

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