To dissolve, solvent particles must come in contact with solvent particles. Particles of hot water are moving much more rapidly than particles of cold water. Hence, in hot water more water particles will come in contact with hot chocolate powder than in cold water, resulting in faster dissolving.

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3 years ago

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If you know that a population is 75% the dominant phenotype and 25% is the recessive phenotype, can you determine approximately

Andreyy89

If dominant allele = p, and recessive allele = q,
and p+q = 1, then:
${(p + q)}^{2} = {p}^{2} + 2pq + {q}^{2} \\ where \: {p}^{2} \: is \: homozygous \: domin \\ {q}^{2} \: is \: homozygous \: recessive \\ and \: 2pq = heterozygous$
So if 75% have the p, then p^2 = homozygous dominant
${p}^{2} = {(.75)}^{2} = .5625$
And if the other 25% have the q, the q^2 = homozygous recessive
${q}^{2} = {(.25)}^{2} = .0625$
Now those remaining MUST be the heterozygous, thus 2pq are those:
2pq = 2(.75)(.25) = .375

Therefore homozygous dominant are 56.3% and heterozygous are 37.5%

8 0

3 years ago