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Author Question: Alleles occur in pairs, and when gametes are formed only one of each pair of alleles is present in ... (Read 668 times) |
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.