Question

Suppose in this same population of turtles, a volcano erupts, spewing lava that upon cooling turns the soil surface dark and sooty. Thankfully no turtles were harmed during the eruption. However because of the change in soil color, light shelled turtles are easier to see and therefore more likely to be eaten by predators. 80% of dark shelled turtles survive predation, while only 20% of light turtles survive predation. 1. 1.0 2. 0.2 3. 0.25 4. 0.8 5. 0.172 6. 0.124 7. 0.790 8. 0.876 Assuming your original allele frequencies above were correct, what is the frequency of the a allele after one generation? What is the relative fitness (W) of the AA genotype?

          Suppose in this same population of turtles, a volcano erupts, spewing lava that upon cooling turns the soil surface dark and sooty. Thankfully no turtles were harmed during the eruption. However because of the change in soil color, light shelled turtles are easier to see and therefore more likely to be eaten by predators. 80% of dark shelled turtles survive predation, while only 20% of light turtles survive predation.

1. 1.0
2. 0.2
3. 0.25
4. 0.8
5. 0.172
6. 0.124
7. 0.790
8. 0.876

Assuming your original allele frequencies above were correct, what is the frequency of the a allele after one generation?

What is the relative fitness (W) of the AA genotype?

Show more…

Suppose in this same population of turtles, a volcano erupts, spewing lava that upon cooling turns the soil surface dark and sooty. Thankfully no turtles were harmed during the eruption. However because of the change in soil color, light shelled turtles are easier to see and therefore more likely to be eaten by predators. 80% of dark shelled turtles survive predation, while only 20% of light turtles survive predation.

1. 1.0
2. 0.2
3. 0.25
4. 0.8
5. 0.172
6. 0.124
7. 0.790
8. 0.876

Assuming your original allele frequencies above were correct, what is the frequency of the a allele after one generation?

What is the relative fitness (W) of the AA genotype?

Added by Michael P.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Madhur L

01/30/2023

Step 1

The problem describes a population of turtles with two types of shell colors determined by their genetics. A volcanic eruption changes the environment, making light-shelled turtles more visible to predators. We are given survival rates for dark-shelled (80% Show more…

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Suppose in this same population of turtles, a volcano erupts, spewing lava that upon cooling turns the soil surface dark and sooty. Thankfully no turtles were harmed during the eruption. However because of the change in soil color, light shelled turtles are easier to see and therefore more likely to be eaten by predators. 80% of dark shelled turtles survive predation, while only 20% of light turtles survive predation. Assuming your original allele frequencies above were correct, what is the frequency of the a allele after one generation? What is the relative fitness (W) of the AA genotype? 1. 1.0 2. 0.2 3. 0.25 4. 0.8 5. 0.172 6. 0.124 7. 0.790 8. 0.876

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Transcript

00:01 Hello student here the question is regarding the turtle population and these turtle population is formed in volcano erupt and fortunately there is no harm to this turtle population.

00:14 So there are two celled population, two different type of.

00:19 So first one is the light shale crudal.

00:23 So these light shell turtle is formed and another one is the ducal.

00:32 Dark sailed of turtle.

00:37 So these turtle in case of light sail, it is having the frequency which is a is equal to 0 .25 and this dark shell having the frequency of 0 .75 and the survival rate for this survival rate is 80 % or we can say 0 .8.

01:01 So this is the 80 % survival rate.

01:04 So suppose this is represented by s and the survival rate for this is h is equal to 20 % which comes across 0 .2.

01:15 So these are the survival rate and these are the frequency and we have to find out the frequency of a allele, a after one generation.

01:24 So in order to calculate frequency after one generation.

01:30 So suppose the frequency should be p -dash for the small a because here we are considering this as p and this as a q.

01:42 So if p -dash is equal to then p -1 -h survival rate plus q and this one minus s survival rate of the q.

01:55 So here the values are given.

01:57 So this is the 0 .251 -1 -2 survival rate for the a.

02:04 Allele and this is the 0 .75 and 1 minus 0 .8.

02:10 So this comes across 0 .35...

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