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Cara took the photograph below of a butterfly. Which tool would be most helpful in identifying the butterfly?

◯ A. A butterfly net 

◯ B. A sketchbook

◯ C. A dichotomous key of plants 

◯ D. A field guide to butterflies 

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Related questions

1. Imagine you are doing a summer internship as a research assistant at Mountain Lake Biological Station in Virginia. During your internship you observe two distinct species of butterflies in the area. They have similar body shapes and they both drink nectar. But their color patterns are different; one is bright green and one is dark green. You further observe that their habitat ranges overlap, but are distinct in that the dark green butterfly prefers shady, cool forest interiors while the bright green butterfly prefers sunny meadows. Both species are camouflaged well in their respective habitats. You have seen both species preyed upon by birds. Finally, the population size of the two species is about equal. Based on the information given, was the evolution of these two species of butterflies more likely due to natural selection or genetic drift? Write an answer in which you concisely define both mechanisms, state which evolutionary mechanism is more likely and logically explain why.

2. You are studying a population of cheetahs and discover that across most loci you find fewer heterozygotes than expected and more homozygotes. What are two possible explanations of this result? What impact might this have on population fitness? This answer can be brief, not a long essay.

A population of butterflies has an allele B for big spots on the wings and b for small spots on the wings. The table below provides data about this population.

Genotype BB Bb bb
Number of butterflies 300 400 300
Genotype frequency 0.3 0.4 0.3

Regarding these data about the butterfly population, which of the following statements is correct?

1-The population is not in Hardy-Weinberg equilibrium because the genotype frequency of bb is greater than it would be in equilibrium.
2-The population is in Hardy-Weinberg equilibrium because the number of B alleles is equal to the number of b alleles.
3-The population is not in Hardy-Weinberg equilibrium because p 2 and 2pq are different.

4-The population is in Hardy-Weinberg equilibrium because half of the heterozygotes are B and half are b.

1. (10 points) You are studying wing colour in a newly discovered type of butterfly. The ZW system is used in butterflies, where males are Z/Z and females are Z/W. You have two different populations of pure-breeding butterflies. One population has orange and black wings and the other has solid orange wings.

b) What does pure-breeding mean? (1 point)

You do a pair of reciprocal crosses with your two populations. CROSS A involves black and orange females crossed to solid orange males. All the F1 offspring of cross A have solid orange wings.

c) What have you learned from this cross? (1 point)

CROSS B involves a solid orange winged female and a black and orange male.

d) Predict the outcome expected if the wing colour trait is sex-linked. Use defined symbols of your choice in your explanation. (2 points)

e) Predict the outcome expected if the wing colour trait is autosomal. Use defined symbols of your own choice (2 points)

f) If the trait is sex-linked, predict the offspring expected if the F1 from cross B (described in part d, above) are interbred. (2 points)

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