Mutation Rates- Module 4.1

 

    I think that mutation rates can evolve in the sense that different mutations contribute to changing the structure of DNA. The presence of either disease or resource availability can cause mutation rates to increase. If a species does not have the proper resources for their fitness, then they may experience higher mortality rates. This relates to Darwin’s second and third postulate. Depending on the specific alleles inherited by an organism, they may have a lower chance of survival; if that same gene is present amongst other members, then the mutation rate can evolve.

    A species with a low mutation rate would be more stable because there are less chances of a change occurring that could impact the survival. I guess lower mutation rates can relate to less diversity, because there are less chances of “messing up” and less new risks introduced. High mutation rates would be present in an environment that is under lots of change. Whether it is increased presence of a predator, disease, lack of resources, etc. the species would be under constant adaptations. Having to always adapt can lead to more “mistakes” occurring in DNA.

Comments

  1. ReeseFebruary 26, 2021 at 2:18 PM

    Hi Prutha!

    I agree with the disease and resource availibility can change mutation rates. Other things like radiation, UV and other forms of energy can alter cell growth and cause mutation as well! Things like this make me wonder what other outside effects can cause mutations to increase, and if it has a longstanding effect on an organisim.

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