Evolving the Musculoskeletal System

Really? Would you say that a system of objects at complete thermal equiibrium (no thermal diversity) has low entropy, while a system of objects at diverse temperatures but containing the same total amount of thermal energy has comparatively higher entropy?I would suggest the exact opposite.Entropy does not equal diversity or complexity

I think you really mean to ask a different question, namely, does the second law of thermodynamics require that DNA degrade over time given the processes that DNA undergoes including, replication, mutation, etc.? I'm also sure that you are not talking about the DNA in a single individual, but whether DNA in progressive descendants of an individual must degrade over the sequence of generations.First, let me point out that my last formal life science class was 9th grade biology, and that you'll probably want a better answer than mine.I will suggest that as long as the organisms are not a closed system, it is not even inevitable that entropy for the DNA will even increase. So I suspect the answer is no, there is no requirement for DNA to degrade over time. I'm not aware of anything showing that DNA in humans has degraded compared to previous generations. Edited by NoNukes, : minor reformat

The 2nd Law of thermodynamics does not require any such thing.What suggests to you that DNA is deteriorating?

I disagree. For example if these are bit streams in which the next bit is always zero, the streams have the same entropy.