IB Biology HL A3.1.5 Difficulties in Distinguishing Species Topic Practice

ConceptConcept DocsDocuments

ConceptConcept DocsDocuments

A Unity and Diversity

A1.2 Nucleic acids

A2.1 Origins of cells

A2.2 Cell structure

A2.3 Viruses [HL only]

A3.1 Diversity of organisms

A3.1.1—Variation as defining feature of life

A3.1.2—Species as groups with shared traits

A3.1.3—Binomial system

A3.1.4—Biological species concept

A3.1.5—Difficulties in distinguishing species

A3.1.6—Diversity in chromosome numbers

A3.1.7—Karyotyping and karyograms

A3.1.8—Unity and diversity of genomes within species

A3.1.9—Diversity of eukaryote genomes

A3.1.10—Comparison of genome sizes

A3.1.11—Whole genome sequencing

A3.1.12 (HL)—Difficulties with biological species concept

A3.1.13 (HL)—Chromosome number as shared trait

A3.1.14 (HL)—Dichotomous key development

A3.1.15 (HL)—Environmental DNA barcodes

A3.2 Classification and cladistics [HL only]

A4.1 Evolution and speciation

A4.2 Conservation of biodiversity

B Form and Function

C Interaction and Interdependence

D Continuity and Change

IB/Biology/HL//Question Bank/A Unity and Diversity/A3.1 Diversity of organisms/A3.1.5—Difficulties in distinguishing species

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