Image: Chris Doyle. Some birds grow funny-coloured feathers where they're not meant to. Here's a male blackbird that's a great example. This condition is called partial albinism, and it's usually inherited but can be caused by other factors.Some birds have just one or two white feathers, while others can be white all over or with big white blotches.ere's a male blackbird that's a great example. This condition is called partial albinism, and it's usually inherited but can be caused by other factors. Some birds have just one or two white feathers, while others can be white all over or with big white blotches.
DNA Paternity Testing (sometimes called parentage testing) uses DNA, the biological basis of inheritance, to prove or disprove the relationship between a child and an alleged father. It is based on the fact that we inherit half of our DNA from our fathers and half from our mothers.
The tuberculosis (TB) blood test, also called an Interferon Gamma Release Assay or IGRA, is a way to find out if you have TB germs in your body.The TB blood test can be done instead of a TB skin test (Mantoux).There are two kinds of TB blood tests:f you had the BCG vaccine and you have a choice of having a TB blood test or a TB skin test, it is better for you to have the TB blood test. This is because the TB blood test is not affected by the BCG vaccine.