Two incipient species of birds differ in the coloration of their wings. Males of species A have red wings, while males of species B have orange wings. Females positively select those colors. If these two species came into secondary contact, which of the following scenarios would demonstrate a case of reinforcement?Group of answer choicesSpecies A has maroon wings and species B has yellow wingsA third species C is formed with pink wingsBoth species A and B have red wingsBoth species A and B have orange wings
Question
Two incipient species of birds differ in the coloration of their wings. Males of species A have red wings, while males of species B have orange wings. Females positively select those colors. If these two species came into secondary contact, which of the following scenarios would demonstrate a case of reinforcement?Group of answer choicesSpecies A has maroon wings and species B has yellow wingsA third species C is formed with pink wingsBoth species A and B have red wingsBoth species A and B have orange wings
Solution
Reinforcement in evolutionary biology refers to the process by which natural selection increases reproductive isolation. It is a mechanism that prevents interbreeding between two populations of species, which could lead to less fit hybrid offspring.
In the context of your question, reinforcement would be demonstrated if the females of both species A and B continue to positively select males with their original wing colors (red for species A and orange for species B) even after coming into secondary contact. This would strengthen the reproductive isolation between the two species, as females would not be selecting males from the other species due to their different wing color.
Therefore, none of the provided scenarios demonstrate a case of reinforcement. The correct scenario would be one where species A continues to have red wings and species B continues to have orange wings, and females of each species continue to select males with their respective wing colors.
Similar Questions
Which of the following would lead to speciation?Group of answer choicesOne breed of frog is active during the day, while another breed of frog is active at night.Two insects are unable to mate due to differences in reproductive organs.Both of these examples would lead to speciation.
The following behaviors help birds increase their reproductive success in different ways. Which one most directly increases a bird’s chance of mating?Choose 1 answer:Choose 1 answer:(Choice A) An arctic tern migrates from an area of low resources to an area of high resources.AAn arctic tern migrates from an area of low resources to an area of high resources.(Choice B) A killdeer bird pretends to be injured to distract and lead predators away from its nest.BA killdeer bird pretends to be injured to distract and lead predators away from its nest.(Choice C) A male bird-of-paradise dances to attract the attention of a female.CA male bird-of-paradise dances to attract the attention of a female.
Selection for dark-winged moths in a population of moths with pigmentation that varies from light to dark is an example of _____ selection.Multiple choice question.artificialdirectionaldisruptivestabilizing
Swallowtail butterflies are present on each island of an archipelago. Each island’s population differs subtly from those of other islands in morphology, especially in wing shape and color. What type of approach would be the most successful to determine whether the different populations are distinct species or not?Group of answer choicesInvestigating the wing shape of both populationsStudy the fitness of the offspring of crosses of butterflies from both populationsStudying the wing color of both populationsUsing molecular data to study the phylogenetic relationship between both populationsQuantify the number of mating events between butterflies of each population when put in contact in the lab
The blue bird and white bird will be having offspring. Assuming that "codominance" occurs, what color will the offspring be? ablue bwhite clight blue dblue and white
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.