Which of the isolating mechanisms listed below have partly evolved between apple and hawthorn host races of Rhagoletis pomonella, the apple maggot fly?
Hybrid sterility
Gametic
Hybrid breakdown
Behavioral
Ecological
Mechanical
Hybrid inviability
Temporal
*multiple choices can be selected* this is all the information the question gave me.
Answer
Ecological
If important ecological resources are of only a few distinct types, then ecological specialization results
– E.g. eat apples or eat hawthorn berries
– Rhagoletis pomonella
– Apple maggot fly, apple race & hawthorn race
– Males and females recognize food sources
Which of the isolating mechanisms listed below have partly evolved between apple and hawthorn host races...
*22. Which of the isolating mechanisms listed in Table 26.2 have partly evolved between apple and hawthorn host races of Rhagoletis pomenella, the apple maggot fly? TABLE 26.1 Types of reproductive isolating mechanisms Type Characteristics Prezygotic Acts before a zygote has formed Ecological Differences in habitat; individuals do not meet Temporal Reproduction takes place at different times Mechanical Anatomical differences prevent copulation Behavioral Differences in mating behavior prevent mating Gametic Gametes are incompatible or not attracted to each other Postzygotic...
13.(6 points) Draw a phylogeny below that includes an apple tree, a redwood, moss, green algae, and a fern. Label on the tree when each of the following traits evolved: seeds(A) flower petals(B), roots(C), cuticle(D), dominant sporophyte stage(E). Circle the taxon you would consider a good potential outgroup. 14. (3 points) Temporal and behavioral isolation are examples of premating isolating mechanisms. Mechanical isolation, gametic isolation, and hybrid inviability are examples of postmating isolating mechanisms. Premating isolating mechanisms are considered much...