ALLOPATRIC SPECIATION a. Does food affect the mating preferences of the fruitflies? b. What would the results be in each generation if a few fruit flies from the sweet potato/pineapplefruit population had been placed in the banana population or vice versa. Explain your prediction.
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ALLOPATRIC
a. Does food affect the mating preferences of the fruitflies?
b. What would the results be in each generation if a few fruit flies from the
sweet potato/pineapplefruit population had been placed in the banana
population or vice versa. Explain your prediction.
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- Measuring Genetic Diversity in Human Populations How would a drastic reduction in a populations size affect that populations gene pool?JUST ANSWER, DON'T EXPLAIN Microevolution is described by which of the following? Select one: A. Changes in anatomical structures found in an individual when compared to ancestral forms of the species B. Changes in anatomical structures found in a population when compared to ancestral forms of the species C. Changes in the frequency of alleles in a population D. Changes in the frequency of alleles in an individualSympatric, allopatric and parapatric speciation, which is considered the (far) more common mechanism of species formation.
- Fruit flies of the genus Drosophila are distributed worldwide, but 30-40% are found on Hawaiian islands. How can you explain this distribution pattern? I’m addition, most species that have been identified are almost indistinguishable from other species and yet vary few hybrids have ever been observed. How might this phenomenon be explained?Background Information: Before the industrial revolution, the trees in the forest around Manchester, England were a light grey/green due to the color of lichens (fungus) on their trunks. Peppered moths, or Biston betularia, which lived in the area were found in two varieties: 1) Light with dark spots (most common) and 2) Dark with light spots (less common). Because there were not enough resources to support the entire population, the two varieties of this species had to compete for survival. Their coloring, when against a similar background, served as camouflage against predators such as birds and lizards, thus increasing chances of survival. As the Industrial Revolution progressed, the trees became covered with sulfur dioxide, which killed the light-colored lichen and thus turning the tree trunks dark. Problem Questions: Choose only 1 question below to answer in an “If…then” hypothesis. What will happen to the number of light-colored peppered moths as the trees began to darken?…Choose correct option do explain. 1.Two closely-related finch species occasionally form hybrids. These hybrids tend to have beaks of an intermediate size to their parental species, which have large and small beaks respectively. What evidence would suggest there is extrinsic postmating isolation? Group of answer choices- a.The hybrids are not able to obtain enough food due to beak size b.The hybrids die early due to deleterious gene combinations c.The hybrids cannot reproduce with members of either parent species d.The hybrids cannot reproduce with other hybrids
- Lions and tigers are separate species. However, on rare occasions (especially in zoos) they have been known to mate and produce hybrid offspring (ligers & tigons!). Explain, with reference to the mechanisms of reproductive isolation, why they are separate species even though they can mate.In a large population of chimpanzees, there is a recessive genetic condition telactalase (fictional). Assume the Hardy-Weinberg distribution. If the frequency of dominant allele is 0.77 then what fraction of the population has telactalase ? Giver your answer with four digits parts the decimal point.Mimicry of yellowjacket wasps by clearwing moths is an example of a harmless species resembling a dangerous one. What is the ad-vantage to the moth of this form of mimicry? What is the advan-tage to a dangerous species of mimicking another dangerous species?
- Dog variation or fish variation - explain how these variations appearance affect their fitness-the rate of survival and reproduction.A. What kind of speciation do we normally associate with members from one population being geographically displaced to a new, smaller population? Geospiza scandens B. What kind of speciation do we normally associate with members of a population that become ecologically, genetically or behaviorally distinct within that population such that they become reproductively isolated?Threatened species often have small, isolated populations where mating between relatives occurs. Let's assume one of these threatened species has a disease controlled by a gene that has two alleles A and a. Only individuals with two copies of the "a" allele have the disease and die before reproducing. Question: What are the effects of inbreeding on the frequency of the "a" allele, and the frequency of the disease in the population?