They are the result of slight changes in the genetic information that produces them.Due basically to their common ancestry. Evolution just builds on the past and does not innovate when it can tinker, So, the closer the ancestry is the closer the skeletal arrangement will be.
some have back bones and the others dont
it lets humans do triple backflips. Try it!
They are the result of slight changes in the genetic information that produces them.Due basically to their common ancestry. Evolution just builds on the past and does not innovate when it can tinker, So, the closer the ancestry is the closer the skeletal arrangement will be.
vertebrates are animals with spinal cords/ back bones
just bones actually..vertebrates have bones and invertebrates got none..
Because we're (theoretically) evolved from the same creature(s). Mutations and adaptations have simply changed groups in different ways over millions of years.
Vertebrates
animals with back bones
Birds.
bones
Vertebrates are animals with back bones. Invertebrates don't.