Questions: Most frog species have a distinct tadpole life stage. However, microhylid frogs of Australia and New Guinea do not have a free-swimming tadpole stage. The tadpole forms inside the egg, completes metamorphosis, and hatches from the egg. This would be an example of a(n) Multiple Choice anatomical homology. developmental homology. molecular homology. anatomical analogy. developmental analogy. molecular analogy

Most frog species have a distinct tadpole life stage. However, microhylid frogs of Australia and New Guinea do not have a free-swimming tadpole stage. The tadpole forms inside the egg, completes metamorphosis, and hatches from the egg. This would be an example of a(n) Multiple Choice anatomical homology. developmental homology. molecular homology. anatomical analogy. developmental analogy. molecular analogy
Transcript text: Most frog species have a distinct tadpole life stage. However, microhylid frogs of Australia and New Guinea do not have a free-swimming tadpole stage. The tadpole forms inside the egg, completes metamorphosis, and hatches from the egg. This would be an example of a(n) Multiple Choice anatomical homology. developmental homology. molecular homology. anatomical analogy. developmental analogy. molecular analogy
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Solution

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The answer is the fifth one: developmental analogy.

Explanation for each option:

  • Anatomical homology: This refers to similarities in the structure of different organisms due to shared ancestry. Since the question is about the developmental process rather than anatomical structures, this option is incorrect.

  • Developmental homology: This refers to similarities in the developmental processes of different organisms due to shared ancestry. The microhylid frogs' unique development process is not shared with other frog species, so this option is incorrect.

  • Molecular homology: This involves similarities at the molecular level, such as DNA or protein sequences, due to shared ancestry. The question does not pertain to molecular similarities, so this option is incorrect.

  • Anatomical analogy: This refers to similarities in anatomical structures that arise independently in different species due to similar environmental pressures or functions, not shared ancestry. The question is about developmental stages, not anatomical structures, so this option is incorrect.

  • Developmental analogy: This refers to similarities in developmental processes that arise independently in different species due to similar environmental pressures or functions, not shared ancestry. The microhylid frogs' development process is an independent adaptation, making this the correct answer.

  • Molecular analogy: This involves similarities at the molecular level that arise independently in different species. The question does not involve molecular processes, so this option is incorrect.

In summary, the microhylid frogs' unique development process is an example of developmental analogy, as it represents an independent adaptation rather than a shared ancestral trait.

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