Answer: I believe the correct answer for this would be mutation. It has a change on DNA, but can not have ANY effect upon the phenotype.
I believe it's called the urethra
New research shows how technology and experimental methods in science can always help and be of help when trying to find out the fine details and see how a theory should be updated and what is needed to be corrected in a certain hypothesis or theory.
Dinosaurs they are termed as a diverse group of reptiles. They first appeared in the time of triassic.
After triassic and jurassic extinction event, dinosaurs became terrestrial vertebrates.
