Directional selection acts against:
both extremes simultaneously in the variation of the trait
one of the extremes in variation
the average or mean value for the population
none of these

Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale

Which of the following is required of a new drug?me

If t=tall and t=short what will be the physical appearance of the offspring the cross below? a.some will be tall and some will be short b.they will all be tall c.they will all be short d.they will be medium height