suggest three (3) reasons why scientists choose to use rRNA as an Evolutionary Chronometer.

Discussion and Reply to a statement

“Evolution of Disease, Humans, and Animals”

Note: Online students, please respond to one (1) of the following three (3) bulleted items.

  • In your own words explain the concept of rRNA then suggest three (3) reasons why scientists choose to use rRNA as an Evolutionary Chronometer.
  • Provide a 100-250 word debate as to whether or not you believe that epigenetic marks can be inherited. Next briefly summarize the nature of the information that epigenetic marks store.
  • Read the New York Times article entitled, “Reverse Engineering Birds’ Beaks into Dinosaur Bones” found here then provide a brief summary of the article. Next discuss whether or not you believe that the evolution of birds can be reversed. Why or why not?

Reply to this statement

 

The epigenetic marks can be inherited through the DNA of a certain generation and then passed on through gametes to the coming generation. The inheritance of epigenetic marks do happen and there are some scientific groups figuring out to what extent this happens, there are some groups or subset of genes referred to as imprint genes which have two functions one which comes from the mother and the other one from the farther, either coming from the mother or from the mother their allele is methylated important but only one produces the proteins because they remain elucidated mostly in the early development. It is very important to establish that the phenotype to be inherited is dependent on being passed through the gametes. An illustration of the mice is stressing the mother which is more likely raised, and is referred to as associative changes in the DNA methylation in glucocorticoid receptor gene. This is not done through gametes although there is some behavior interaction in the parents.

 

The organism can be changed by the environmental factors. these changes can be positive and some can be  associated with very bad diseases like cancer, some certain epigenetic marks can be inherited and change their shape due to environmental factors and cellular features over the generations.

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