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In peppered moth populations, light and dark moths are selected for in different environments. which type of selection is this, and what would a distribution curve for all peppered moths look like?

a. stabilizing selecction; two peaks at the extremes of the graph with a dip in the middle
b. disruptive selection; a tall, narrow peak in the center of the graph
c. disruptive selection; two peaks at the extremes of the graph with a dip in the middle
d. stabilizing selection; a tall, narrow peak in the center of the graph

so whats the answer?

The answer is c) disruptive selection with two peaks at the extremes of the graph and a dip in the middle.

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 point)

The type of selection occurring in this case is directional selection where individuals with extreme traits have a higher fitness advantage. The distribution curve for the trait of birth weight in female reindeer population would shift towards higher birth weights over time, reflecting the increase in the average birth weight of offspring. The curve would shift to the right because there would be more individuals born with larger birth weights than in previous generations.

so whats the answer

The answer is: the type of selection occurring is directional selection, and the distribution curve for the trait of birthweight in female reindeer population would shift towards higher birth weights over time.

Mathematics of Natural Selection Quick Check

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Question
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 point)
Responses

stabilizing selection; the curve would become taller in the middle
stabilizing selection; the curve would become taller in the middle

directional selection; the curve would shift to the right
directional selection; the curve would shift to the right

directional selection; the curve would shift to the left
directional selection; the curve would shift to the left

stabilizing selection; the curve would become shorter in the middle
stabilizing selection; the curve would become shorter in the middle

The correct answer is: directional selection; the curve would shift to the right.

In a population of mice, individuals with medium brown fur are less likely to be seen by predators than light brown and dark brown mice. What type of selection is this, and what would the distribution curve for the mouse population look like?(1 point)

Responses

stabilizing; two peaks at either end of the graph with a dip in the middle
stabilizing; two peaks at either end of the graph with a dip in the middle

stabilizing; a tall, narrow peak in the center of the graph
stabilizing; a tall, narrow peak in the center of the graph

disruptive; two peaks at either end of the graph with a dip in the middle
disruptive; two peaks at either end of the graph with a dip in the middle

disruptive; a tall, narrow peak in the center of the graph

The type of selection occurring is stabilizing selection, where individuals with intermediate traits have a higher fitness advantage. The distribution curve for the fur color in this population of mice would show a tall, narrow peak in the center of the graph, with a tapering off of frequencies towards both the light brown and dark brown extremes. The answer is stabilizing; a tall, narrow peak in the center of the graph.

answer is??

The answer is: stabilizing; a tall, narrow peak in the center of the graph.

Paleontologists observed changes in the sizes of black bears as their environment changed. During warmer periods between ice ages, most black bears were small. During ice ages, most black bears were large. Which type of selection is this, and how would a graph of the distribution curve of black bear size change as Earth moved out of an ice age?(1 point)

Responses

stabilizing; the curve would become taller in the middle and shorter on each side
stabilizing; the curve would become taller in the middle and shorter on each side

directional; the curve would shift to the right
directional; the curve would shift to the right

directional; the curve would shift to the left
directional; the curve would shift to the left

disruptive; the curve would break into two peaks with a dip in the middle

The type of selection being described here is directional selection, where individuals with larger or smaller body size have a fitness advantage over individuals of intermediate size depending on the current environmental conditions. Over time, as Earth moves out of an ice age, black bears would likely become smaller in size, and the distribution curve of black bear size would shift towards the left. Thus, the answer is directional; the curve would shift to the left.

so answer??

The answer is: directional; the curve would shift to the left.

ty bot

You're welcome! If you have any more questions, feel free to ask.

The type of selection being described is disruptive selection, where both the light and dark peppered moths are favored in different environments. The distribution curve for all peppered moths would show two peaks at the extremes of the graph with a dip in the middle. Therefore, the answer is option c.