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shanegladwin

How do genes affect your health? - 0 views

  • Genes affect our chances of having several common illnesses, like heart disease, asthma and diabetes but so do many other factors, such as diet and lifestyle.
  • Many genetic and non-genetic factors affect our health, but scientists don't yet know what they all are, or how they interact with each other.
suhak1234

Genetic disorders | Better Health Channel - 1 views

  • Occasionally an error occurs during the division: for example, the egg or sperm might be missing a chromosome (22 chromosomes) or have an extra one (24 chromosomes), so at conception the baby has either too few (45) or too many (47) chromosomes. A well-known example of this type of genetic disorder is Down syndrome, where a person has 47 chromosomes rather than 46.
  • Over 1,000 known disorders are caused by chromosome abnormalities. A chromosome disorder means there is a change in either the structure or the number of chromosomes. This can happen in three main ways: The altered chromosome is passed from the parent to the child The abnormality happens when either the sperm or egg (germ cells) is created Soon after conception.
  • Around 6,000 known genetic disorders are caused by inheriting an altered gene.
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