The number of legs an insect has, the number of vertebrae in a vertebral column, or the number of joints in a digit (such as a finger) are all strongly influenced by

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#Question id: 12340

#Section 1: Ecology

Keystone species are thought to have profound effects on the structure and composition of ecological communities because they

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#Question id: 10893

#Section 2: Evolution

The ___________ holds that two species with the same ecological requirements cannot coexist.

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#Question id: 11243

#Section 4: Behavioural Ecology

Which of the following would be a hermaphrodite?

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#Question id: 10605

#Section 1: Ecology

DN/dt = rN (K-N/K )The logistic equation above is used to describe the rate of change of a population, N, with time, t, Where r is the intrinsic rate of increase and K is the carrying capacity. Which of N value will show maximum per capita growth rate?  (K= 1000, r =.05)

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#Question id: 3268

#Section 2: Evolution

A population of insects is in Hardy-Weinberg equilibrium for a gene with alleles A = orange and a = yellow eyes. There are 91% orange and 9% yellow individuals in the population. If the fitness of the yellow phenotype suddenly drops to zero, what will be the allele frequency in the next generation?