Biology HL
Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme A - Unity & diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme D - Continuity & Change
Biology HL
Biology HL

Theme D - Continuity & Change

Unlocking Natural Selection's Secrets

Word Count Emoji
628 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Natural Selection - The Darwin Edition 🐢

👨‍🎓 Charles Darwin shook the world with his theory of natural selection. What does it mean? Organisms with certain traits have a better chance of surviving and reproducing.

 

🎉 Real-World Example: Think of it like a reality show where the contestants are plants, animals, and even microorganisms. The winners get to have babies, and their babies are likely to inherit winning traits!

Fitness - Not Just For Gym Lovers 🏋️‍♂️

📏 Definition: Fitness is about how well-suited you are for your environment. If you're a cactus, being able to store water makes you "fit" for a desert life.

 

🎉 Real-World Example: It's like having the right "gear" for camping. A water-resistant tent would make you more "fit" to survive a rainstorm than a paper bag would!

Adaptation - The Art of Survival 🍂

🛠️ Types of Adaptations

  • Abiotic: Against non-living things like temperature.
  • Biotic: For living things, like developing a beak that can crack tough nuts.

🎉 Real-World Example: Polar bears have thick fur and a layer of blubber for the Arctic's harsh conditions. It's like wearing a heavy-duty parka and snow boots in a snowstorm!

Variation Among Individuals - No Two Are Alike 🦓

🧬 Why it Matters: In a population, everyone is slightly different. Some are better adapted, thus "fitter," and will likely survive and have more kids.

 

🎉 Real-World Example: Think of a soccer team. Not everyone is good at scoring goals, but that defender who blocks every shot is also super valuable. Both are "fit" but in different ways.

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IB Resources
Theme D - Continuity & Change
Biology HL
Biology HL

Theme D - Continuity & Change

Unlocking Natural Selection's Secrets

Word Count Emoji
628 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

Natural Selection - The Darwin Edition 🐢

👨‍🎓 Charles Darwin shook the world with his theory of natural selection. What does it mean? Organisms with certain traits have a better chance of surviving and reproducing.

 

🎉 Real-World Example: Think of it like a reality show where the contestants are plants, animals, and even microorganisms. The winners get to have babies, and their babies are likely to inherit winning traits!

Fitness - Not Just For Gym Lovers 🏋️‍♂️

📏 Definition: Fitness is about how well-suited you are for your environment. If you're a cactus, being able to store water makes you "fit" for a desert life.

 

🎉 Real-World Example: It's like having the right "gear" for camping. A water-resistant tent would make you more "fit" to survive a rainstorm than a paper bag would!

Adaptation - The Art of Survival 🍂

🛠️ Types of Adaptations

  • Abiotic: Against non-living things like temperature.
  • Biotic: For living things, like developing a beak that can crack tough nuts.

🎉 Real-World Example: Polar bears have thick fur and a layer of blubber for the Arctic's harsh conditions. It's like wearing a heavy-duty parka and snow boots in a snowstorm!

Variation Among Individuals - No Two Are Alike 🦓

🧬 Why it Matters: In a population, everyone is slightly different. Some are better adapted, thus "fitter," and will likely survive and have more kids.

 

🎉 Real-World Example: Think of a soccer team. Not everyone is good at scoring goals, but that defender who blocks every shot is also super valuable. Both are "fit" but in different ways.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟