Figure 19.1 -Currently, Two Extant Elephant Species (X and Y) Are Placed

question 38

Multiple Choice

Figure 19.1
-Currently, two extant elephant species (X and Y) are placed in the genus Loxodonta, and a third 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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Definitions:

Polar Molecule

A molecule with an uneven distribution of charge due to differences in electronegativity between bonded atoms, resulting in a dipole moment.

Molecular Polarity

A characteristic of a molecule with uneven distribution of electron density, resulting in the molecule having a positive end and a negative end.

Carbon Monoxide

A colorless, odorless, and tasteless gas produced by incomplete combustion, toxic to humans and animals when inhaled.

Molecular Polarity

A characteristic of molecules where there is an unequal distribution of electrons between atoms, leading to a molecule having a positive end and a negative end.