Currently, two of the living elephant species (X and Y) are placed in the genus Loxodonta, and a third surviving species (Z) is placed in the genus Elephas. Assuming this classification reflects evolutionary relatedness, which of the following is the most accurate phylogenetic tree?

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#Question id: 16777

#Section 3: Mathematics and Quantitative Ecology

What is the formula for the median of Grouped data? 

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#Question id: 4602

#Section 2: Evolution

If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?

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#Question id: 11250

#Section 4: Behavioural Ecology

The equation to describe the s-shaped growth curve that illustrates logistic growth is

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#Question id: 12419

#Section 1: Ecology

If the number of females in a population is remaining constant through time, r0 will

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#Question id: 9577

#Section 1: Ecology

The epidermal coloration of the African grasshopper is a striking example of irreversible developmental responses to environmental conditions. Which of the following statements is true?