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The Student and Tutor reviewed key concepts in population ecology, including population growth models, R/K selection, and formulas for population change. They also covered energy flow in ecosystems, the 10% energy rule, ecological pyramids, and productivity (GPP/NPP). The Student practiced calculating population changes and is scheduled to cover biogeochemical cycles and keystone species in the next session.

Student and Tutor covered key concepts in population ecology, including definitions of birth/death rates, immigration/emigration, and different population growth models (exponential and logistic). They practiced applying formulas for population growth, analyzed K-selected and R-selected species strategies, and calculated various population growth metrics. The Tutor assigned reading material for follow-up and confirmed plans to discuss graph phases in the next session.

The Student and Tutor reviewed Unit 4 content and introduced Unit 3, focusing on ecosystems and species interactions. They thoroughly discussed various types of species interactions, including mutualism, commensalism, competition, parasitism, predation, and amensalism. The session also covered the water cycle and the carbon cycle, detailing their respective processes, sources, and sinks. The plan is to continue with these topics in the next session, with an oral test for Unit 4 scheduled for Saturday.

The Tutor and Student discussed the upcoming oral, closed-book test for Unit 4, which includes pedigree analysis and Punnett squares. The class then focused on practicing pedigree analysis for autosomal recessive and dominant traits, interpreting genotypes, and understanding genetic probability rules. The session concluded with an introduction to histograms for displaying phenotypic data. The Student was asked to send a biology paper and the next class was scheduled for an earlier time.

The Tutor and Student reviewed advanced biology concepts including the function and inheritance patterns of Hox genes, mechanisms of dominant, recessive, autosomal, and sex-linked inheritance, and the specific inheritance of mitochondrial disorders. They applied these principles by analyzing genetic crosses and predicting offspring characteristics for various genetic conditions. For future sessions, they plan to cover pedigree analysis and Punnett squares in more detail.

The student and Tutor worked on refining an experimental design for a project involving yeast fermentation with various sugar substitutes. They clarified independent and dependent variables, established positive and negative controls, and identified crucial control variables. They also discussed the expected fermentation rates for different sugars and sugar substitutes, laying the groundwork for data analysis and conclusions.