Mirror neurons fire demonstrates the ability of primates to empathize with another organism.
Mirror neurons are a class of neurons that modulate their activity both when an individual executes a specific motor act and when they observe the same or similar act performed by another individual.
Recent studies have shown that the mirror neurons have been hailed as a cornerstone of human empathy, language, and other vital processes.
These neurons are initially found as motor command neurons present in the frontal lobes of the brain and the prefrontal areas of the brain.
These are neurons which fire when a person moves and these are regular motor command neurons, orchestrating a sequence of muscles that allow the person to move something or do some other action.
A subset of these neurons also fire when that person simply watches another person move and do exactly the same action. So these neurons are performing a virtual reality simulation in the brain.
Another example of this is phantom limb.
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Answer:
Most common differences might be long but it is what it is
Explanation:
Answer:
Rough endoplasmic reticulum looks "rough" under a microscope because it has ribosomes attached to its surface.
Explanation:
Rough endoplasmic reticulum (RER) is a membrane organelle found in the cytoplasm of eukaryotic cells, which has ribosomes attached to its outer surface. Hence the name, rough endoplasmic reticulum. It has an important role in the synthesis of proteins. In ribosomes, the proteins are synthesized. The smooth endoplasmic reticulum (SER) does not contain ribosomes. It has an impotant role in the synthesis and storage of lipids. The proteins that are synthesized in the ribosomes are packaged into vesicles and transported to the Golgi apparatus by the rough endoplasmic reticulum. The Golgi apparatus which is located near the RER, modifies, transports and packages proteins for delivery to targeted destinations.
Answer:
D. The frequency of the Ellis-van Creveld allele is 0.0447 in the isolated population and 0.0026 in the general population, which suggests that genetic drift has occurred in the isolated population.
Explanation:
If we assume that one gene is involved in Ellis-van Creveld syndrome and we name that gene with A, then the genotype of the syndrome would be aa.
In population 1, the frequency of the syndrome is 1/150000=0.0000066(it is the frequency of the aa gentotype)
In population 2, the frequency of the syndrome is 1/500=0.002
According to Hardy-Weinberg equilibrium
p2+2pq+q2=1 (p2 is the frequency of the dominant homozygous, 2pq is the frequency of heterozygous and q2 is the frequency of the recessive homozygous).
q or the frequency of the Ellis-van Creveld allele in Population 1 is 
=0.0026
q or the frequency of the Ellis-van Creveld allele in Population 2 is 
= 0.0447
