anthropology lab assignment

This is an anthropology class lab, need to answer all these questions.

here is part of the lab, just put here to make sure if you can answer these question before make a bid on this assignemnt order.

1.Recall the observable traits taken from Lab 1. For each trait, determine the frequency of each phenotype in the class, and then use the Hardy-Weinberg model to infer the allele frequencies. From these, then calculate the genotype frequencies.

Trait

Phenotype Number

Phenotype Frequencies

Allele

Frequencies

Genotype

Frequencies

1) Earlobes

Ee:

Free

102

E:

EE:

Attached

130

e:

ee:

2) Mid-digital hair

Mm:

Present

58

M:

MM:

Absent

174

m:

mm:

3) PTC taster

Tt:

Taster

162

T:

TT:

Non-Taster

70

t:

Tt:

2.When inferring genotypes from phenotypes, what is the difference between dominant and recessive traits?

3.Are dominant alleles necessarily predominant (in the majority) in a population?

4.What did you have to assume to use the Hardy-Weinberg model and determine genotype and allele frequencies?

5.PTC is an artificial substance which is very similar to a natural substance (phenylthiourea) found in cabbage, kale, and related vegetables. The ability to taste PTC correlates with a tendency to avoid such foods. Eating an excess of such foods suppresses the absorption of iodine and can lead to the condition known as goiter, an abnormal thyroid. Thus, tasting PTC may have some selective advantage populations that have a low amount of iodine in their diet. There is a higher percentage of non-tasters from northern Europe and a few other groups (e.g., people from Bombay, India). Is there any evidence for this tendency in the population of the class?