Are Apple and Hawthorn Maggot Flies Separate Species?

According to the phylogenetic species concept, are hawthorn and apple maggot flies separate species? YES – They are GENETICALLY DISTINGUISHABLE and have a DISTINCT GENETIC PROFILE, so they’re SEPARATE SPECIES according to this concept.

Are apple flies and hawthorn flies the same species?

Hawthorn flies and apple flies are considered to be two races of the species complex Rhagoletis pomonella. The flies are textbook examples for the process of sympatric speciation, a process by which new species evolve in the same geographic region from a common ancestor species.

Can hawthorn flies mate with apple flies?

Hawthorn & Apple Maggot Flies

There is only a 4-6% hybridization rate between hawthorn and apple maggot flies.

Why are hawthorn flies becoming different species?

Their breeding season matches the season when the apple or hawthorn fruits mature. Because they rarely interbreed, the two populations of flies are evolving other genetic differences. They appear to be in the process of becoming separate species.

How is apple maggot an example of sympatric speciation?

The sympatric hypothesis posits that ecological specialization after a host shift can result in speciation in the absence of complete geographic isolation. The apple maggot, Rhagoletis pomonella, is a model for sympatric speciation in progress. Hawthorn (Crataegus spp.) is the native host for R. pomonella in N.

Why would apple maggot flies be considered two separate races?

They would have as many similar alleles as any two random individuals.

What makes two organisms the same species?

Key points. According to the biological species concept, organisms belong to the same species if they can interbreed to produce viable, fertile offspring. Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.

What is Parapatric speciation example?

3.2 Parapatric Speciation

The best-known example of incipient parapatric speciation occurs in populations of the grass Agrostis tenuis which span mine tailings and normal soils. Individuals that are tolerant to heavy metals, a heritable trait, survive well on contaminated soil, but poorly on non-contaminated soil.

What causes apple maggot?

Apple maggot flies lay eggs in fruit and the fruit becomes pitted and misshapen. Each “sting” or hole created by the female fly as she lays an egg, forms a tiny spot or dimple. Pulp breaks down, discolors and starts to rot as a result of maggots (larvae) tunneling through the flesh.

Is the population of hawthorn flies living on the apples becoming a new species?

Is the population of hawthorn flies living on the apples becoming a new species? If flies from the apple and hawthorn populations are freely interbreeding with one another, then they would be considered the same species.

What are the types of speciation?

  • Sympatric Speciation. Sympatric speciation occurs when populations of a species that share the same habitat become reproductively isolated from each other.
  • Allopatric Speciation.
  • Parapatric Speciation.

What are some examples of allopatric speciation?

Allopatric speciation occurs when two groups of organisms are separated by a physical or geographic barrier. Common examples of these barriers include mountain ranges, oceans, and even large rivers. The isthmus of Panama is a prime example of a geographical barrier and it separates the Atlantic and Pacific oceans.

What is the most likely consequence of the introduction of apple trees to apple maggots?

What is the most likely consequence of the introduction of apple trees to apple maggots? A. Populations of apple maggots that mate on different trees could become reproductively isolated and eventually speciate.

What was the species concept most used by Linnaeus?

Linnaeus pioneered the use of binomial nomenclature, Latin scientific names which serve as a shorthand for descriptions of species. As an example, the scientific name of the yellow-shafted flicker (a woodpecker) is Colaptes auratus, where Colaptes is the generic and auratus the specific epithet.

What type of speciation involves the the complete physical separation of groups eg by a wide river?

In allopatric speciation reproductive isolation is a direct result of the geographical separation of two (or more) populations through a physical barrier such as a river.

Which is an example of a Postzygotic isolating barrier quizlet?

The offspring of two mice that cannot produce viable gametes. Which is an example of a postzygotic isolating barrier? a. The genetalia of a male duck that do not fit properly with the genitalia of females of another population.



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