The Question is from neet-zoology genetics-evolution what-are-the-evidences-for-evolution, and it was created by the author BALASOURY

Question

The observation that the embryos of different vertebrate species share similar structures in early stages of development, such as gill slits and tails, is BEST explained by which evolutionary concept?

BALASOURY · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [C]
## CONCEPT FRAMEWORK
	**Primary Concept**: Common ancestry
	**Related Topics**: Evolutionary biology, embryology, phylogenetics
	**Prerequisites**: Understanding of evolutionary theory and embryonic development
## SOLUTION PATHWAY
**Given Information**:
		1. Embryos of different vertebrate species exhibit similar early developmental structures.
		2. These structures include gill slits and tails.
**Method & Steps**:
	1. Identify the underlying concept that explains the similarity in embryonic structures across species.
		Reasoning: Similar embryonic features suggest a shared evolutionary origin.
		Formula/Rule: None directly applicable, but concept of common ancestry is key.
	2. Consider alternative explanations such as convergent evolution or adaptive radiation.
		Working: Convergent evolution refers to unrelated species developing similar traits due to similar environmental pressures, which does not apply here as these are shared ancestral traits.
		Key Point: Adaptive radiation involves diversification from a common ancestor due to adaptation to different environments, not the shared embryonic features.
	3. Conclude that the shared embryonic structures are best explained by common ancestry.
		Result: The concept of common ancestry accounts for the similarities seen in embryonic development.
		Verification: Check if other options can explain the phenomenon, but they do not fit as well.
## OPTION ANALYSIS
[A] :x: Convergent evolution involves unrelated species developing similar traits due to environmental pressures, not applicable here.
[B] :x: Adaptive radiation describes diversification from a common ancestor, but does not explain the embryonic similarities directly.
[C] ✓: Common ancestry explains that all vertebrates share a common ancestor, leading to similar embryonic features in early development.
[D] :x: Genetic drift refers to changes in allele frequencies due to random sampling, unrelated to shared embryonic structures.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing convergent evolution with common ancestry: Remember that convergent evolution applies to unrelated species.
		2. Misunderstanding adaptive radiation as a direct cause of embryonic similarities: Focus on the idea of a shared ancestor instead.
	**Quick Tips**:
		1. When faced with similar structures in biology, always consider common ancestry first.
		2. Use embryology as a strong indicator of evolutionary relationships among species.

BALASOURY · Answer

Convergent evolution

BALASOURY · Answer

Adaptive radiation

BALASOURY · Answer

The correct Option is "Common ancestry"

BALASOURY · Answer

Genetic drift

NEET Zoology Genetic Evolution What Are The Evidences For Evolution MCQs

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