Microevolution is small genetic changes within a specific population or a group within a population, occurring within a short time span, like one generation. Macroevolution is big changes across species and over long spans of time.
Answer:
Hypothalamus is considered as the one to control the Sleep-Wake Cycle, injury to that region will likely cause deprived sleep and mostly an awkward behavior.
Explanation:
Answer:
Mutations can occur in either cell type. If a gene is altered in a germ cell, the mutation is termed a germinal mutation. Because germ cells give rise to gametes, some gamete s will carry the mutation and it will be passed on to the next generation when the individual successfully mates
Answer:
For the sympathetic nervous system:
i. the preganglionic neurotransmitter is acetylcholine, while
ii. the postganglionic neurotransmitter is norepinephrine
For the parasympathetic nervous system both pre- and postganglionic neurones use acetylcholine as their neurotransmitter.
Explanation:
Sympathetic and parasympathetic nervous system are the two components of the autonomic nervous system.
The sympathetic system arises from the the thoracolumbar (T1-L2) region of the spinal cord.
The parasympathetic nervous system originate from
i. the cranial nuclei in the brainstem (brainstem nuclei cranial nerve III, VII, IX, and X), and
ii. sacral nerves (S2-S4).
Preganglionic and postganglionic neurones link both sympathetic and parasympathetic systems to their effector organs.
At synaptic junctions in the autonomic ganglia ththe preganglionic neuron of both sympathetic and parasympathetic nervous system use cholinergic neurotransmitter (acetylcholine). The postganglionic neurotransmitters are not the same for both sympathetic and parasympathetic systems. The sympathetic uses norepinephrine (adrenergic) while the parasympathetic maintains the acetylcholine.
The answer is b. Warm and rising
