Question

cladistics groups organisms based on evolutionary ancestry, whereas linnaean taxonomy classifies organisms in hierarchies based on ________ similarities.

molecular (dna)
morphological
phylogenetic
none of the above

Explanation:

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<reasoning>

Contrast classification systems

Cladistics groups organisms based on shared evolutionary ancestry (phylogeny). Linnaean taxonomy, developed before evolutionary theory, classifies organisms into hierarchical ranks based on shared physical characteristics.

Identify the basis of Linnaean classification

The physical characteristics used in Linnaean taxonomy correspond to anatomical or structural features, which are defined as morphological similarities.

Evaluate the given options

• "molecular (DNA)" refers to modern genetic cladistics.
• "morphological" refers to physical form and structure, which is the basis of Linnaean taxonomy.
• "phylogenetic" refers to evolutionary relationships (cladistics).
• Therefore, "morphological" is the correct term to fill in the blank.

</reasoning>

<answer>
<mcq-option>molecular (DNA)</mcq-option>
<mcq-correct>morphological</mcq-correct>
<mcq-option>phylogenetic</mcq-option>
<mcq-option>none of the above</mcq-option>
</answer>

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Answer:

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<reasoning>

Contrast classification systems

Cladistics groups organisms based on shared evolutionary ancestry (phylogeny). Linnaean taxonomy, developed before evolutionary theory, classifies organisms into hierarchical ranks based on shared physical characteristics.

Identify the basis of Linnaean classification

The physical characteristics used in Linnaean taxonomy correspond to anatomical or structural features, which are defined as morphological similarities.

Evaluate the given options

• "molecular (DNA)" refers to modern genetic cladistics.
• "morphological" refers to physical form and structure, which is the basis of Linnaean taxonomy.
• "phylogenetic" refers to evolutionary relationships (cladistics).
• Therefore, "morphological" is the correct term to fill in the blank.

</reasoning>

<answer>
<mcq-option>molecular (DNA)</mcq-option>
<mcq-correct>morphological</mcq-correct>
<mcq-option>phylogenetic</mcq-option>
<mcq-option>none of the above</mcq-option>
</answer>

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