1. Genes are found within the inside the nucleus of the cell.2.
traits are passed down and are not influenced by an
organism's surroundings. 3.
alleles are hidden and may show up in a future generation. 4. The combination of alleles an offspring
receives from a parent is known as its

1. is correct but 2. makes more sense because DNA passes traits down, and organisms surroundings has nothing to do with it

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You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.