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DNA is made up of two long chain backbones, bound together and forming a double helix shape. These backbones are made up of repeating units, each of which have the following structure:
A ...
For this answer, like with any other essay question, I encourage my students to draft an essay plan prior to writing. By doing so, my students show me their strengths and weaknesses which allows me to ...
If both parents are heterozygous (xX) and the blue allele (x) is recessive to the dominant brown allele (X), the offpring has a 1/4 chance of getting homozygous recessive alleles (xx).
If...
This essay question comes from OCR's Classical Civilisation A-Level Paper "Homer's Odyssey and Society" 2014.
In the exam you need to spend about 45 minutes an...
the aim of finsing the inverse is making x the subject. To start we need to multiply both sides by: (2x+3), giving us:
y(2x+3) = 5x-4
now we need to expand the brackets:
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