Question

what does a manhattan plot show researchers?
a. the number of polymorphisms on a single chromosome.
b. which genes appear more frequently with a specific behaviour and where they are located.
c. how many genes are similar in dz twins.
d. the function of different genes.

Explanation:

A Manhattan plot is a key tool in genetic association studies. It maps genetic variants across chromosomes on the x-axis and their statistical association with a trait (like a specific behavior) on the y-axis, highlighting which genes (and their chromosomal locations) are linked to the trait more frequently. Option A is incorrect because it does not count polymorphisms on a single chromosome. Option C is unrelated, as twin similarity is not assessed by this plot. Option D is wrong because the plot does not show gene functions.

Answer:

B. Which genes appear more frequently with a specific behaviour and where they are located