Answer:
It is a hypothesis that explains the origin of evolutionary reversions.
Explanation:
A phylogenetic tree may indicate that genes required for forming anatomical structures such as wings are not completely lost and they are activated many times during the evolution.
<span>type of tissue do you think makes up the three layers of membrane you encountered in your muscle are the connective tissue. the skeletal tissue is made up of muscle fibers. these fibers are surrounded by 3 layers of connective tissue to form a muscle</span>
Answer: Membrane proteins act as receptors to molecules like hormones.
Explanation:
Membrane proteins are proteins that are closely associated with a cell membrane. On the cell membrane, they could act as receptors to molecules like hormones that need to be transported across the hydrophobic lipid bilayer.
A good example of membrane proteins is sodium channel, that acts as receptor to neurotransmitters.
Botany,zoology,genetics,biochemistry