Over generations, female reindeer in a Finnish population give birth to larger offspring. Which type of selection is occurring, and how would a distribution curve for this trait change over time?
1.directional selection; the curve would shift to the right
2.stabilizing selection; the curve would become shorter in the middle
3.stabilizing selection; the curve would become taller in the middle
4.directional selection; the curve would shift to the left
1. directional selection; the curve would shift to the right
In this scenario, directional selection is occurring as female reindeer in a Finnish population are giving birth to larger offspring over generations. This means that individuals with larger offspring have a higher fitness and are more likely to survive and reproduce, leading to a shift in the average trait value towards larger sizes.
As a result, the distribution curve for this trait would shift to the right over time, indicating an increase in the average size of offspring being born. This shift would demonstrate the ongoing trend of larger offspring being favored and passing on their genes to future generations.