Starting with DNA, explain how normal and sickled red blood cells acquire their shapes. Use the terms: DNA, mutation, amino acid, valine, mRNA, glutamic acid, protein, fiber

What do animals wth echolocation have in common other than echolocation

What must be done to breed dogs for a partical trait

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of