A)only one discrete phenotype. B)a distribution with a large proportion of individuals at the two extremes. C)a normal distribution with an equal number of points above and below the mean. D)a normal distribution with an equal number of points at each value within the range.
To test for statistical significance of the association of a SNP with a trait, the null hypothesis in a chi-square test for independence is that the one of the SNP alleles is more common in the Cases than in the Controls.
Typically, multiple interacting genes and the environment contribute to a complex quantitative trait, resulting in
A)discontinuous distribution of discrete phenotypes. B)continuous variation of the trait in a population. C)strict dominance of a single allele so that one phenotype is most common. D)continuous variation of the trait in a single individual.