How many Dominant alleles is needed for the Dominant trait to show up?

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Which example is a mechanical wave?     a. microwave    b. radio wave    c. water wave    d. ultraviolet light

The gram molecular mass or co2 is the same as the gram molecular mass of