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So first we must gather the informaton, the disease is caused by a dominant allele, we may call this 'D', the recessive could therefore be 'd'. The mother has the disease, but the father does not. Therefo...

We would first like to work out the size of all the angles which have not been give, as one angle is 140 degrees we know the angle opposite to it is also 140 degrees due to the symetry of the shape. The t...

Firstly you would analyse the cost of the melons in the first shop per kg. So you could buy 2 melons for £2 because they're buy one get one free and each weighs 2kg so therefore you're getting 4kg of melo...

There is no such thing as a foolproof way of determining the gender of a noun. However, there are a few rules which are worth learning and which will help you in this way, especially if you are a list lea...

• Fluorine is a halogen, these group 7 elements are reactive because they require just 1 additional electron to achieve a noble configuration. 

• Fluorine is the smallest halogen, ...