Two siblings express different eye colors. The brother has brown eyes but the sister has blue eyes. Which statement explains why the siblings express different eye color? * The brother received genes only from his father, and the sister received genes only from her mother.
The siblings each received a different combination of genetic information from their parents.
The brother received fewer genes from his other than his sister received.

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16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?