A dominant trait is more likely to appear than the recessive trait but maybe in the future one of ur child can have that recessive trait also the dominant trait is shown in capital letters and recessive are shown in lower case letters .. hope this helps:)
G always pairs with C...So, if there is 30% G, then there's 30% C...which is 60%...that leaves 40% A+T - and you have to split this up too - so 20% Thymine (T) and 20% Adenine (A).