Animals that possess homologous structures probably __________.

• A. are headed for extinction
• B. have increased genetic diversity
• C. by chance had similar mutations independently in the past
• D. are not related
• E. evolved from the same ancestor

Answer: (E)

Verified step by step guidance

1. Understand the concept of homologous structures: Homologous structures are anatomical features in different species that have similar forms or functions due to a common evolutionary origin.
2. Recognize the significance of homologous structures: These structures indicate that the species possessing them have evolved from a common ancestor, sharing a similar genetic heritage.
3. Consider the evolutionary implications: When species have homologous structures, it suggests that they have diverged from a common ancestor over time, adapting to different environments or functions.
4. Evaluate the options given: Analyze each option to determine which one aligns with the concept of homologous structures and their evolutionary significance.
5. Select the correct answer: Based on the understanding of homologous structures, choose the option that indicates a shared evolutionary origin, which is 'evolved from the same ancestor'.