A plant height in Maize is control by 3 pair of polygene .Two varieties of maize averaging 120 and 60 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 40 inches in height. What is proportional of F2 progeny that is display phenotype either 120 cm or 60 cm height?

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#Question id: 10818

#XL - T Zoology

Which of these relationships is generally not considered one that underlies community structure?

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#Question id: 10819

#XL - T Zoology

According to the competitive exclusion principle, potential competitors can only coexist through

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#Question id: 10820

#XL - T Zoology

Of the following types of interactions, which one is least likely to limit population size?

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#Question id: 10821

#XL - T Zoology

What factor does not contribute to the rapid loss of nutrients from terrestrial ecosystems?

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#Question id: 10822

#XL - T Zoology

When two organisms attempt to utilize the same resource, the result is:

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#Question id: 10824

#XL - T Zoology

Interspecific competition has been demonstrated experimentally in