What are some ways DNA can mutate without affecting the phenotype?

Question

Also why can an excess of genetic material be less harmful than a deficit of genetic material?

Answer 1

1. DNA mutations won't affect the phenotype if the mutation happens in a noncoding area of the chromosome (junk DNA) or if the mutation changes the base sequence to one that codes for the same amino acids. For instance, the mRNA codons CUU and CUC both code for leucine. Any mutation that changed one to the other wouldn't have any effect.

2. Deficit of genetic material (missing some DNA) would mean some genes are missing. The proteins that should be made from those genes would be missing too.

Answer 2

there are different lines of code that are used to handle the production of RNA, start up and end codes truly, now fairly some DNA highly in human beings is for probable the most part disabled for this reason of the shortcoming of those codes in quite a few parts. if a mutation occurs in those parts, that do not seem coded into RNA and for this reason do not seem used to make proteins, than the mutation might want to no longer be substantive interior the creatures phenotype.

Answer 3

Point-mutation. It changes a single nucleic base, but it might not change the outcome.
An excess of genetic material doesn't change anything really, but a defect, like something missing, can affect things like your brain's functions.