A.4.1 Evolution and Speciation - IB Biology SL NEW SYLLABUS First assessment 2025

Описание к видео A.4.1 Evolution and Speciation - IB Biology SL NEW SYLLABUS First assessment 2025

IB Biology new syllabus (First assessment 2025)
Standard level (SL)
Theme A: Unity and Diversity
A.4: Ecosystems
A.4.1: Evolution and speciation

00:00 Intro
00:07 Evolution as change in the heritable characteristics of a population
03:22 Evidence for evolution from base sequences in DNA or RNA and amino acid sequences in proteins
06:03 Evidence for evolution from base sequences in DNA or RNA and amino acid sequences in proteins
07:34 Evidence for evolution from homologous structures
07:09 Limitations of the definition
08:58 Evidence for evolution from homologous structures
10:27 Speciation by splitting of pre-existing species
11:35 Roles of reproductive isolation and differential selection in speciation

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