Content Introduction Sex-Chromosome Systems Sex-Chromosome Evolution Sex-Chromosome Organization Molecular evolution Conclusions Introduction Sexual reproduction is common in multicellular organisms This includes fusion of gametes (isogamy vs anisogamy) from two individuals Anisogamy can give rise to separate sexes (males and females) The sex can be determined by environment or genetic factors Sex chromosomes have evolved independently several times in different linages SEX-CHROMOSOME SYSTEMS: Sex chromosomes from related Sex chromosomes from related linages are not necessarily linages are not necessarily homologous homologous ...
NEW CURRICULUM Focus on 4 Big Ideas in Biology 1. The process of evolution drives the diversity and unity of life 2. Biological Systems utilize free energy and molecular building blocks to grow, to reproduce, and to maintain dynamic homeostasis 3. Living systems store, retrieve, transmit and respond to information essential to life processes 4. Biological systems interact, and these systems and their interactions possess complex properties NEW CURRICULUM Focus on 7 science practices 1. The student can use representations ...
‘Biology’ as a discipline • Official date of birth 1802 (Lamarck, Treviranus) • But used in earlier decades • And there are competitor terms for a science of life (including ‘natural history’ used in a broad sense) – they reflect a ‘practice’ and the need for a ‘theory’ (unification) • And such terms persist will after 1802 (zoonomy, as in Erasmus Darwin; biogeography, etc.) Philosophy of biology vs Biological philosophy • Auguste Comte: “biological ...
The way we were. CONTENT FOCUS BIOL21 BIOL22 BIOL23 BIOL24 BIOL25 LEC + LEC + Lab int. LEC + Lab int BREADTH DISC DISC DISC LITTLE SCAFFOLDING 7 UD COURSES, 5 WITH LAB 5 COURSES IN THE EMPHASIS D E P T H BIOMEDICAL CELL MOLECULAR ECOLOGY AND EVOLUTION PROBLEMS TOO MUCH CONTENT TO COVER IN THE LOWER DIVISION LACK OF SCAFFOLDING DUE TO INCREASE IN DIVSERSITY OF LIFE SCIENCE MAJORS PUT NEARLY ALL PRESSURE FOR SKILLSAND COMPETANCIES IN ONE ...
Property Value Contextual Ready Contextual URL Contextual Initial Segments Contextual Used Segments AdUnit SubAdUnit Custom Targeting Ad Events Invalid Ad Sizes Close • This Journal • Back • Online Now • Current Issue • About the Journal • Author Resources • Archive • Alerts • Submit • Research Journals • Back • Cell • Cancer Cell • Cell Chemical Biology • Cell Genomics • Cell Host & Microbe • Cell Metabolism • Cell Reports • Cell Reports Medicine &bull ...
Property Value Contextual Ready Contextual URL Contextual Initial Segments Contextual Used Segments AdUnit SubAdUnit Custom Targeting Ad Events Invalid Ad Sizes Close • This Journal • Back • Online Now • Current Issue • About the Journal • Author Resources • Archive • Alerts • Submit • Request access • Research Journals • Back • Cell • Cancer Cell • Cell Chemical Biology • Cell Genomics • Cell Host & Microbe • Cell Metabolism • Cell Reports • Cell ...
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