Wolves and domesticated dogs can breed and produce viable offspring. These offspring are also fertile. A scientist uses this to classify them as a single species. In making this determination, which species concept was used?

Question

Wolves and domesticated dogs can breed and produce viable offspring.  These offspring are also fertile.  A scientist uses this to classify them as a single species. In making this determination, which species concept was used?

BlackTom AI · Accepted Answer

The question centers on how scientists classify wolves and domesticated dogs as a single species based on their ability to interbreed and produce fertile offspring.
Option 1: Morphological species concept. This approach groups organisms by physical form and structure. While useful, it ignores reproductive compatibility and would not rely on whether the offspring are fertile or not.
Option 2: Biological species concept. This concept defines a species as a group that can interbreed and produce viable, fertile offspring, and are reproductively isolated from other such groups. The scenario directly fits this idea, since wolves and dogs can mate and produce fertile offspring, supporting their classification as one species under this concept.
Option 3: Phylogenetic species concept. This concept defines species based on the smallest distinct branch on a phylogenetic tree, emphasizing evolutionary relationships and ancestry. It does not require observed interbreeding or reproductive compatibility.
Option 4: Molecular species concept. This approach uses genetic distinctiveness and molecular data to delineate species boundaries. While informative, it emphasizes genetic differences rather than interbreeding capability.
Option 5: Ecological species concept. This concept defines species by occupying and utilizing distinct ecological niches. It focuses on ecological roles rather than reproductive compatibility.
In summary, the key criterion described—interbreeding and producing fertile offspring to define a species—aligns with the Biological species concept, whereas the other concepts rely on morphology, phylogeny, molecular data, or ecology rather than reproductive compatibility.

BIOLOGY 1114.01 SP2025 (17927) 1114 Comprehensive Lab Final Exam - Requires Respondus LockDown Browser

Wolves and domesticated dogs can breed and produce viable offspring. These offspring are also fertile. A scientist uses this to classify them as a single species. In making this determination, which species concept was used?

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