The measles, mumps and the rubella vaccine [MMR] is usually given to children twice before the age of 7. The first dose is given between age 12 to 15 months while the second dose is given between the ages of 4 and 6. Many people link the MMR vaccines to autism because of a scientific publication that was published in 1989. The research study reported a link between autism and MMR vaccination. This publication has been discredited.
Also, the period of during which the first dose of the vaccination is usually given coincides with the time when parents usually notice developmental abnormalities in their children.
Answer:
crossing over
Explanation:
This occurs between prophase 1 and metaphase 1.
D. He or she will show some symptoms of the disease.
<span>The types of individuals in a population that are represented by the two ends of a bell curve are those with an extreme variation of a specific trait. The bell curve is a normal distribution. It is the most common type of distribution. The greatest part of the distribution belongs to the variations of a trait near to the average value. However, two ends of the bell curve belong to individuals with an extreme variation of the trait.</span>
