Biology SL
Biology SL
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 SL
Biology SL

Theme D - Continuity & Change

Unlocking Meiosis Dive Into Cellular Secrets!

Word Count Emoji
564 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Hey there, young biologist! Welcome to the ultimate crib sheet for Meiosis and Chromosomes! Let’s break it down in a way that’s as fun as a TikTok dance challenge! 🕺🧬

Meiosis - The Matchmaker of Cells 📌

Meiosis is the Reduction Division. Why? 🤔

  • It's a super important process that reduces the number of chromosomes in a cell by half. Imagine having two pizzas 🍕🍕 and you have to share, so you end up with just one 🍕.

Chromosomes and DNA - The Building Blocks of You! 🧬 📖

  • What's a Chromosome?
    • Think of it as a super long "spaghetti" strand of DNA.
    • Along the "spaghetti" are little "meatballs," called genes.
  • What Are Genes?
    • Genes are sequences on the chromosome.
    • An average human chromosome has about 1,000 genes.
    • When your DNA replicates, the sequence of these genes doesn’t change.

Real-World Example: Imagine a book series like "Harry Potter." Each book (chromosome) has chapters (genes). Even if new editions come out, the chapters stay in the same sequence. Magic, right? 🧙‍♂️

Evolution & Change in Gene Sequence 🐦🦎

  • Major changes in gene sequence are kinda rare and usually happen only during the evolution of new species.
  • Chromosomes with the same sequence of genes are called Homologous (think of them as siblings).

Real-World Example: A chameleon changes its colors to adapt but its basic shape stays the same. Similarly, genes can have small mutations but the overall chromosome remains pretty consistent.

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

Theme D - Continuity & Change

Unlocking Meiosis Dive Into Cellular Secrets!

Word Count Emoji
564 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Hey there, young biologist! Welcome to the ultimate crib sheet for Meiosis and Chromosomes! Let’s break it down in a way that’s as fun as a TikTok dance challenge! 🕺🧬

Meiosis - The Matchmaker of Cells 📌

Meiosis is the Reduction Division. Why? 🤔

  • It's a super important process that reduces the number of chromosomes in a cell by half. Imagine having two pizzas 🍕🍕 and you have to share, so you end up with just one 🍕.

Chromosomes and DNA - The Building Blocks of You! 🧬 📖

  • What's a Chromosome?
    • Think of it as a super long "spaghetti" strand of DNA.
    • Along the "spaghetti" are little "meatballs," called genes.
  • What Are Genes?
    • Genes are sequences on the chromosome.
    • An average human chromosome has about 1,000 genes.
    • When your DNA replicates, the sequence of these genes doesn’t change.

Real-World Example: Imagine a book series like "Harry Potter." Each book (chromosome) has chapters (genes). Even if new editions come out, the chapters stay in the same sequence. Magic, right? 🧙‍♂️

Evolution & Change in Gene Sequence 🐦🦎

  • Major changes in gene sequence are kinda rare and usually happen only during the evolution of new species.
  • Chromosomes with the same sequence of genes are called Homologous (think of them as siblings).

Real-World Example: A chameleon changes its colors to adapt but its basic shape stays the same. Similarly, genes can have small mutations but the overall chromosome remains pretty consistent.

Unlock the Full Content! File Is Locked Emoji

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