Question

In: Biology

Male butterflies sometimes court females of other species with similar wing patterns. You are interested in...

Male butterflies sometimes court females of other species with similar wing patterns. You are interested in how long males persist in courting the wrong female. You decide to test each male with a dead female, to control for the effect of the female’s behavior. You use three types of test females: one from the same species as the males, one from a different species with a similar wing pattern, and one from a different species with a different wing pattern. Each pair is placed in a cage, and you measure courtship time in seconds.

#1 Female of same species: 23, 20, 17, 25, 28

#2 Female of different species, similar pattern: 18, 27, 24, 21

#3 Female of different species, different pattern: 22, 21, 23, 20

a. Which statistical test would you use to look for differences?

b. Perform the test. What is your test statistic? Can you reject your null hypothesis?

c. Give a biological reason why your test may have come out the way it did.

Expert Solution

Answer:

Based on the given information:

Courtship time is measured in seconds
#1 Female of same species: 23, 20, 17, 25, 28
#2 Female of different species, similar pattern: 18, 27, 24, 21
#3 Female of different species, different pattern: 22, 21, 23, 20

a. Which statistical test would you use to look for differences?

One-way ANOVA (Analysis of Variance) test can be used to look for differences in this case.

b. Perform the test. What is your test statistic? Can you reject your null hypothesis?

	Treatments
	1	2	3	Total
N	5	4	4	13
∑X	113	90	86	289
Mean	22.6	22.5	21.5	22.2308
∑X²	2627	2070	1854	6551
Std.Dev.	4.2778	3.873	1.291	3.2443

Result Details
Source	SS	df	MS
Between-treatments	3.1077	2	1.5538	F = 0.12612
Within-treatments	123.2	10	12.32
Total	126.3077	12

The F-ratio value is 0.12612. The p-value is 0.88288. The result is not significant at p < .05.

c. Give a biological reason why your test may have come out the way it did.

Male Butterflies use wing color and pattern to look for butterflies. Wing pattern recognition only comes into play when the butterflies are in close proximity.

gladiator answered 1 year ago

2. Male butterflies sometimes court females of other species with similar wing patterns. You are interested...

2. Male butterflies sometimes court females of other species with similar wing patterns. You are interested in how long males persist in courting the wrong female. You decide to test each male with a dead female, to control for the effect of the female’s behavior. You use three types of test females: one from the same species as the males, one from a different species with a similar wing pattern, and one from a different species with a different wing...

You are studying wing colour in butterflies. You cross pure-breeding male butterflies that have blue wings...

You are studying wing colour in butterflies. You cross pure-breeding male butterflies that have blue wings with yellow eyespots, with pure-breeding female butterflies with orange wings and black eyespots. The F1 males all have orange wings and black eyespots, while the females have blue wings and yellow eye spots. You cross the F1 males and females and obtain the following F2 (the male and female F2 give the same ratios): 90 with orange wings and black eyespots 90 with blue...

7. You have identified a new species of nematode that you are interested in studying and...

7. You have identified a new species of nematode that you are interested in studying and understanding its early development. In particular, you want to know if the same factors responsible for establishing early differences between cells are the same between this nematode and C. elegans. You decide to take the approach of a genetic screen. Note: you find that these worms ARE NOT hermaphrodites and instead, males and females mate to produce offspring. Assume all genes you are studying...

You study bird species on a remote Peruvian mountain and are interested in how the populations...

You study bird species on a remote Peruvian mountain and are interested in how the populations have responded to climate change. You have access to bird population surveys from 1985. In this location, annual mean temperature has increased by 0.42 °C from 1985 to 2018. (A) Based on your understanding of ecology and evolution, make three predictions describing how bird species from different elevations will respond to rising temperatures (3 points). (B) Briefly describe a way that you could test...

Given the warming climate, you are interested in how seed production of a certain plant species...

Given the warming climate, you are interested in how seed production of a certain plant species if affected by temperature. In particular, you are interested in whether seed production shows a plastic response to temperature, and, if so, whether there is the possibility for adaptive evolution of phenotypic plasticity in response to climate change. Please describe the steps that would be needed to demonstrate there is the capacity for adaptive evolution in the population you are studying.

You are studying two endangered species – one is a small flowering plant and the other...

You are studying two endangered species – one is a small flowering plant and the other is a rare lizard. Explain what method you would use to estimate the population size of each, and why. What type of population dynamics and growth models would you expect in each of these populations, and why? I'm stuck with is question and it is due tomorrow by 12pm

You are interested in whether students that have a male instructors perform differently on "e"s. To...

You are interested in whether students that have a male instructors perform differently on "e"s. To investigate this, you gather a sample of 5 students that have a male instructor and compare their "e"s average to the average of all instructors. he data are below: Male Instructors All Instructors x ̅=74.5 µ=76.8 s = 7.62 State your null and alternative hypothesis Null: there is no difference (µ=76.8) Null: There is difference (µ≠76.8) Alternative: There is no difference (µ=76.8) Alternative: There...

Do you consider the Hispanic market in the U.S. different from or similar to other markets...

Do you consider the Hispanic market in the U.S. different from or similar to other markets in the U.S? WHY? Explain your answer utilizing economic, social, political, cultural and/or historical arguments. How adaptive have to be, if any, TV broadcasting, radio broadcasting, print media, and social media for Hispanic markets in the U.S.? WHY? Provide credible arguments in support of your answer.

What do you do if there is no research to be found other than the core knowledge on a topic you are interested in?

What do you do if there is no research to be found other than the core knowledge on a topic you are interested in? Have you found in your practice that adjusting your question to the "right question" aids in navigating that issue?

1.Do you consider being an unauthorized immigrant a form of workplace diversity? How is it similar to and different from other kinds of workplace diversity discussed in this chapter?

Unauthorized Immigrant Workers at Chipotle Mexican Grill RestaurantsIn 2015, Chipotle Mexican Grill acknowledged that it was still under investigation by the Securities and Exchange Commission and the U.S. attorney for the District of Columbia for possible failure to comply with laws on employee work eligibility. “It is not possible to know at this time,” the company stated in its annual report to shareholders, “whether the company will incur, or to reasonably estimate the amount of, any fines, penalties or further...