B. Brain and spinal cord
The nervous system is an organ system in charge of sending messages to and from the brain<span> and </span>spinal cord<span> to and from all parts of the body. </span>
Neurons are cells of the nervous system that aid the flow of impulses or information to and from the CNS. The major neurons include the sensory neuron, motor neuron and the relay neurons. It comprises of various parts that aid its function of carrying information namely, axon, dendrites, cell body (soma), myelin sheath. Information is picked up from the dendrites and then transferred to the cell body through action potentials. Then from the cell body the information is taken to the axon which then goes to the pre-synaptic terminal that sends the information to the next neuron which will then repeat the same flow of information.
Answer:
Metamorphic - existing rocks are exposed to extreme conditions
Sedimentary - layers of sediment dry together
igneous - magma or lava solidifies
Answer:
The correct answer is - overdominance.
Explanation:
In the given question, genotype Pp is a heterozygote condition that has a 54% survival rate or fitness thus these individual people get more chance of mating and increase in number as compared to the other two conditions of PP or pp traits where PP has 45% survivability, less than heterozygous condition and more than pp that has only 4% rate.
It results in a normalizing selection model of natural selection as a moderate trait, that is heterozygote, is selected. Thus, the selection of overdominance which means heterozygote condition produces a better phenotype than PP or pp parents is heterosis.
