<span>Autosomal recessive is one of several ways that a trait, disorder, or disease can be passed down through families. An autosomal recessive disorder means two copies of an abnormal gene must be present in order for the disease or trait to develop</span>
If a researcher electrically stimulates the reticular formation in an animal, the animal will immediately wake up and be alert. Its purpose is to have some control of sensory signals and thus has the ability to alert the body when it is tired or needs to be awake.
I believe the answer to your question would be:
<span>phosphate heads of phospholipid</span>
The existence of being able to process photosynthesis.
Photosynthesis is a functional and adaptive mechanism which enables plants to make and create their own food with the use of sunlight. Also, water and carbon dioxide, oxygen is then the by product of this process which is beneficial to other organisms especially heterotrophs.