Aqa Gcse Biology Paper 2 Study Guide Graded A+

What type of cell division are gametes (sex cells) produced by? {Ans: Meiosis}What is Polydactyly + cause {Ans: A genetic disorder where a baby is born with extra fingers or toes. Cause:Dominant Allele- 'D' 'Dd' has Polydactyly 'dd' unaffected}What does phototropism mean? {Ans: The movement of a plant towards light.}What do animals compete with each other for? (3) {Ans: Food, mates and territory}Describe how you could clone a plant. (Cuttings) {Ans: Take a cutting from good parent plants. Dip into rooting powder and plant. Can produce plants quickly and cheaply.}What is deamination? {Ans: Proteins (excess amino acids) cannot be stored by the body. Excess amino acids are converted to fats and carbohydrates. This occurs in the liver.}