Why we can’t regenerate our limbs when ripped out as lizards do?
When humans were in the uterus, there were embryonic stem cells that divides into different cells and eventually built every parts of a human. When we're born, all the embryonic stem cells turned into adult stem cells, which can only generate a small amount of tissues. Animals that can regenerate…
The Short Answer
When humans were in the uterus, there were embryonic stem cells that divides into different cells and eventually built every parts of a human. When we're born, all the embryonic stem cells turned into adult stem cells, which can only generate a small amount of tissues. Animals that can regenerate limbs still have their embryonic stem cells that can build any necessary cells to make a new limb. We don't know for sure why most mammals lost the ability to regenerate limbs, theories include vulnerability to cancer (the more cell divides, the greater chance it will generate incorrectly), high metabolic rate, etc.
Analysis
Key Concepts: Cells, stem, embryonic
This explanation focuses on cells, stem, embryonic and spans 102 words across 4 sentences. At 42% above the average Biology explanation (72 words), this is one of the more thorough answers in this category, reflecting the complexity of the underlying question.
What This Answer Covers
The explanation opens with: “When humans were in the uterus, there were embryonic stem cells that divides into different cells and eventually built e” It then elaboratesultimately building toward a complete picture across 4 connected points.
How This Compares in Biology
Ranked #120 of 500 Biology questions by answer depth (top 25%). This places it in the comprehensive tier — the top quarter of most thoroughly answered questions. Questions at this depth typically involve multi-faceted topics requiring nuanced explanation.
Frequently Asked Questions
Is there a simple explanation for why why we can't regenerate our limbs when ripped out as lizards do?
When humans were in the uterus, there were embryonic stem cells that divides into different cells and eventually built every parts of a human. When we're born, all the embryonic stem cells turned into adult stem cells, which can only generate a…
How detailed is this explanation compared to similar Biology questions?
This is one of the most thorough answer at 102 words, ranked #120 of 500 Biology questions by depth. The key concepts covered are cells, stem, embryonic.
What approach does this answer take to explain why we can't regenerate our limbs when ripped out as lizards?
The explanation uses direct explanation across 102 words. It is categorized under Biology and addresses the question through 1 analytical lens.