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The diagram shows the classification of the brown bear and its relationship with other species - OCR Gateway - GCSE Biology (Combined Science) - Question 8 - 2022 - Paper 1
Question 8
The diagram shows the classification of the brown bear and its relationship with other species. KINGDOM Animalia PHYLUM Chordata CLASS Mammalia ORDER Carnivora ... show full transcript
Worked Solution & Example Answer:The diagram shows the classification of the brown bear and its relationship with other species - OCR Gateway - GCSE Biology (Combined Science) - Question 8 - 2022 - Paper 1
Step 1
Which classification group would show the most similarities in DNA sequencing?
Answer
To determine which classification group shows the most similarities in DNA sequencing, we need to understand the hierarchical nature of biological classification.
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Classification Groups Explained:
- Kingdom: This is the highest and most general classification, including a wide variety of organisms.
- Phylum: This narrows it down further but still encompasses many different classes.
- Class: More specific than phylum, but will still include several orders.
- Order: This group includes specific families, making it more focused.
- Family: Contains specific genera, still more general than genus.
- Genus: This is quite specific, grouping together species that are very closely related.
- Species: The most specific classification, identifying individual organisms.
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Most Similarity in DNA Sequencing:
- Among the groups listed (Class, Family, Genus, Order), the Genus is where organisms share the most recent common ancestors and thus would show the most genetic similarity.
- Therefore, the answer is C Genus as it represents a closer genetic relationship compared to the others.