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1.What information would a scientist need to discover whether a disorder had a genetic cause, an environmental cause, or a combination of the two? 2.How do mutations affect an organism? Why can some mutations have no effect? 3.Which of these traits or behaviors is most likely determined by genes? a. Eye color b. Ability to ride a bike c. The languages you speak d. Your favorite food

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Alkatoe
1. answered that before: he needs to know if the disorder occurs in the members of family (it would suggest genetic cause of a disease) or in housemates/colleagues from work (it would suggest environmental cause if sick people share the environment)
2. mutation is change in a DNA. ie. deletion of one or several nucleotides or substitution one nucleotide with another. and if substitution causes a situation when the new codon codes the same amino acid as the codon before mutation, then we see no effect of this mutation since peptide looks exactly the same.
3. definitely eye color (A) :)

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