Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Consider two species of organisms, species A and species B. Species A has a population in a community. Another population species B arrives into the same community, rather suddenly, being brought into the community by man (there could be other ways by which the new species can enter into a community). Let us assume that the food organisms of the two species are identical (it can be insects or seeds etc.). The range of food particle size fed upon by each individual species falls into a normal curve. By normal curve we mean that there is a variation in the given trait, for example size of the seeds or insects in this case, or beak sizes which are all distributed in such a way that the largest number of individuals in the population has optimum or mean size or measurement and a very few individuals have extreme sizes or measurments. The normal distribution as shown in Figure takes the fo!m of a bell shaped curve. You could observe from Figure that there is a significant overlap in the normal curves of food capturing devices (mouth, beak or tooth sizes) of species A and B. The region of overlap implies that the members of the two species have to compete for their food over a larger area in the community. Essentially, there is an ecological interspecific cornpetiton for food. You may also note in the figure that some food particles (food particles of both large and small sizes) are out of the reach of each species. Although the population as a whole can feed on a range of food particle size, any individual in the community is restricted in the size of the food particles it can feed on.
Assuming that the number of food particles of each size is the same, then individuals outside the region of overlap have better accessibility to the food particles and thcy may have to expend only less energy in acquiring them. Compare these individuals with those which lie within the region of overlap. They have not only to compete with conspecific individuals for their food, but with those of the other species as well. The net result is that the individuals outside the region of overlap have more energy for reproduction, and naturally will tend to leave more offsprings to thc next generation. These offsprings will essentially carry the alleles of their parents including those involved in the determination of food particle size. The effect of this natural selection.
Q. What is the structure that to maintains identical chromatids bound? The structure that to maintains identical chromatids bound is the centromere.
Q. How does the pulmonary ventilation affect the carbon dioxide concentration in blood? What happens to the carbon dioxide concentration and to the blood pH when the respiratory fr
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Didanosine (ddl, Videx) Didanosine is available as buffered tablets, buffered or non-buffered powder, and non-buffered enteric-coated capsules (Videx EC). Adverse effects
Q. What is the difference between respiration by cutaneous respiration and diffusion? Does blood participate in cutaneous respiration? Cutaneous respiration is not as simple as
Which of the following statements is most acceptable from an evolutionary point of view? (a) Apes and humans have evolved from a common ancestor. (b) Humans have evol
Explain the Classification of simple proteins? 1) Albumins: Proteins such as egg albumin and serum albumin are soluble in water and coagulable by heat. 2) Globulins: These p
describe the structure of a lung in terms of covering membranes and cavities
State about membrane-spanning molecule Neuron A is a healthy neuron with all the usual ion channels and with all the usual intracellular and extracellular distributions of ion
How does bisulfite sequencing work ?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd