In order for a bird's beak to evolve into different a types, a mutation must occur first.
Explanation:
All evolution relies on mutations or changes to the DNA. Bird beaks adapt to the environment to be better suited to obtain food. A bird that used to have a pointy beak for stabbing bugs might move to an area with an abundance of seeds. Their DNA mutates so that their offspring can have short beaks to pick up seeds.
How does a population adapt to sudden changes in the environment? According to the most widely accepted paradigm, random genetic changes (mutations) are the source of heritable changes in a plant or animal’s observable characteristics (phenotype). Phenotype, in turn, is the raw material that is acted upon by natural selection, and the most beneficial adaptations are passed on to successive generations. But there is a problem with this paradigm: adaptive genetic mutations are so infrequent that this scenario cannot adequately explain the speed at which adaptation can occur
The image shows a red blood cell in different solution. The first image shows an RBC in a hypotonic solutions. The RBC swell and lyse because of the osmotic movement or referred to as hemolysis. The second image shows a normal RBC in an isotonic solution. There is no net change of water to the RBC. The third image shows a shriveled RBC in a hypertonic solution. The water leak out of the RBC briskly than it enters the cell. It is also called as crenated cell.
Carbohydrates attached to lipids and to proteins extend from the outward facing surface to the membrane. The second factor that leads to fluidity is the nature of the phospholipids themselves
