u cant have both the paternal and maternal chromatids togethter like that before meiosis. u only get the paternal or maternal chromatid after fertilisation and its not sorted exclusively like that
validity was measured by eliminating variables such as socio-econmoic factos, gender, age, etc. and cumulative and average level were both accounted for which means every measurement taken was equally valid to the next.
this kids sitting at band 6's for eng and software and high band 5's for all his other subjects and bio. so lets say for ur sake he gets a low band 5. put that in ninja hsc calc n ur getting above 90 guranteed. at a selective school the only people that get band 4's are those in bottom five to...
just use hsc ninja and put mid band 5's for ur subjects which u havent hit band 6 and put a band 6 mark for those u have hit a band 6 mark. i can promise u that u will get 90+ prolly 93 around.