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  1. CommonSense

    A2 BIOlOGY- Phenotype

    May you please explain the portion in red? phenotypic variation results from interaction of genotype and environment / VP = VG + VE ; environment may modify expression of gene(s) ; must be stated e.g. for size / mass / height ; because, food / nutrient / ion, missing or in short supply ...
  2. CommonSense

    A2 Biology - Error in CIE MarkScheme?!

    43/O/N/11 Q11 b Chiasma formation in metaphase I? Isn't it supposed to be late prophase I? 41/O/N/10 Q9 a Males homogametic? Aren't they supposed to be heterogametic? and finally... 43/M/J/10 Q7 c Anaerobic respiration in yeast involves ethanal dehydrogenase? Isn't it supposed to be alcohol...
  3. CommonSense

    Funniest & Lamest Joke

    Which joke made u laugh ur heart out :lol: and which one made u hate ur birthday? :x Here is my personal choice, I hope u like it and don't forget to post ur replies sharing the funniest and lamest jokes u came across. Funny joke Three representatives were boasting about the scientific...
  4. CommonSense

    CHEMISTRY HELP!!!!!!!!!!

    I have a solution containing carbonate and sulfate ions. The test for carbonate is adding a dilute acid such as HCl and carbondioxide will be liberated. The test for sulfate ions is adding acidified (using HCl) aqueous barium chloride and a white precipitate of barium sulfate will form. I...
  5. CommonSense

    Uniform %age Mark

    What is the Uniform %age Mark? How does it work? Will everybody who got an A in an AS subject have the same mark?
  6. CommonSense

    How to upload a file?

    Hi, I am a new member and I want to upload the insert for CIE IGCSE Economics 0455/03/O/N/09 but I dont know how. I already attached it below. Is this enough? Help.. Please..
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