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All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?