Taxonomy

Species

The fundamental unit of biological classification—a group of organisms capable of interbreeding and producing fertile offspring, or defined by distinct genetic and morphological characteristics.

Used in the Books

This term appears in 59 chapters:

Foundations Introduction

"...ism, and why the "best" company often doesn't win. Book 8: Ecosystem Orchestration How to think about entire markets as living systems. Keystone species (companies that hold ecosystems together), trophic cascades (how changes at one level ripple through entire systems), succession, invasive species, i..."

Foundations Metabolism and Burn Rate

"...imes its mass) - eating almost constantly - because its metabolism is so ferociously fast. Its heart rate can reach 1,200 beats per minute (with some species exceeding 1,500 bpm). If it goes 2-5 hours without food depending on species, it can die from starvation. A mouse weighs about 20 grams (4x the ..."

Foundations Growth Mechanisms

"Better to grow first, then reproduce from a position of strength. But once reproduction starts, growth often slows or stops. Some species go extreme: Pacific salmon grow rapidly for years, then make one massive reproductive effort (swim upstream, spawn, die)."

Foundations Reproduction and Replication

"Asexual reproduction clones proven designs rapidly. Horizontal gene transfer - acquiring capabilities from unrelated species - allows organisms to absorb DNA from their environment. Epigenetic changes - heritable modifications to gene expression without altering DNA sequenc..."

Foundations Symbiosis and Exchange

"But biology shows a different path. The most successful organisms aren't the most self-sufficient. They're the best symbionts - the species that form mutually beneficial exchanges others can't replicate. The question isn't whether you need partnerships. You do."

And 54 more chapters...

Biological Context

The biological species concept (interbreeding) doesn't apply to asexual organisms, fossils, or organisms separated by geography. Alternative concepts use morphology, genetics, or ecology. Species are the basic units counted in biodiversity assessments and the level at which extinction occurs.

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