What is meant by hypertension? What type of damage it may cause in our body? what is the pacemaker of the heart?

1) Hypertension is also known as high blood pressure. It is a condition which the blood vessels have persistently raised pressure.

2) It may cause memory loss, stroke, chest pain, heart attack and severe damage to your body's main artery.

3) A pacemaker is a small, battery-operated device. This device senses when your heart is beating irregularly or too slowly. It sends a signal to your heart that makes your heart beat at the correct pace.

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explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.