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Q1. How do you explain early prenatal pr postnatal experience and (alcohol or radiation) exposure influence long-term outcomes by chemically altering the structure of genes inside a child's brain?

Q2. Colour in moths is determined by alleles at a single locus, such that BB individuals are black, Bb is grey and bb white. If a sample of 1000 moths has 160 black, 480 grey and 360 white individuals, is population in Hardy-Weinberg equilibrium?

Q3. If amino acid sequences might be useful in determining how closely related dissimilar species are but may not be very useful for identifying a particular species, suggest two reasons why.

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