the autonomic (involuntary) nervous system controls the rate at which the heartbeats. sympathetic (fight or flight) signals speed up the heart’s rate while parasympathetic (rest and digest) signals slow it down. The part or parts of the heart that forms sympathetic and parasympathetic neurons form synapses is called cardiac plexus.
Cardiac plexus is a plexus of the nerves that are present at the base of the heart and is divided into superficial and deep part. The sympathetic and the parasympathetic nerves form synapses with heart in the form of cardiac plexus.
The sympathetic nerves are responsible for activating flight or fight mode while parasympathetic nerves are responsible for restoring the normal body state.
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To begin, you have to know what meiosis is. Meiosis is when a cell breaks into four daughter cells (like mitosis but with two extra daughter cells). Those four cells are still part of the parent cell, so they retain the genetics of the parent cell but split-up. So those cells are part of the foundations of the genetic build-up of the offspring.
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Answer is c. fungi, protista and plantea
Epigenetic is the study in the field of genetics of cellular and physiological phenotypic trait variations that are caused by external or environmental factors that switch genes on and of and affects how cells read genes instead of being caused by changes in the DNA sequence. Therefore, hence epigenetic research seeks to describe dynamic alterations in the transcriptional potential of a cell.
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