Activities
Evolution introduction - model answers
The cumulative change in the heritable characteristics of a population. Evidence for evolution often uses comparison of features. Family members are assumed to share similar features. They have placentas,...
Activities
HIV and AIDS model answers
This page shows suggestions of model answers for the activity; Summary worksheet on HIV These are suggestions, not a mark scheme and many other wordings are also correct answers. Model answers for the...
Activities
Adaptive radiation model answers
The document below shows suggested model answers to the questions on the activity on finch beak sizes in Galapagos which is found on the page: Evolution examples Please notes these are suggestions,...
eBook
A4.1 Evolution - student friendly syllabus
Blue text shows extra clarification or guidance. Guiding questions SL and HL A4.1.1 - Evolution is a change in the heritable characteristics of a populationThis definition helps to distinguish Darwinian...
Activities
Polyploidy (2025)
Using the examples of agricultural crop plants students learn what polyploidy is and how it helps solve the problems of hybrid infertility in plants often leading to new species and hybrid vigour. There...
Activities
Data analysis & polyploidy model answers (copy)
In an experiment to look at mechanisms of polyploidy in 2002 Andrzej JOACHIMIAK and Tomaz ILNICKI measured the amount of nuclear DNA and the chromosome number of cells in tissue cultures of the species...
Activities
Speciation & reproductive isolation (2025)
After consideration of what a gene pool is and the way that evolution causes changes in gene pools this lesson looks at the driving forces of speciation using the examples of Bird of paradise species...
Activities
Gene pool - model answers to video questions (copy)
While watching the video https://youtu.be/8yvEDqrc3XE answer the following questions. A group of actually or potentially interbreeding populations which are reproductively isolated from other groups _______________________...
Activities
Evolution introduction (2025)
After watching a short video introduction to evolution, students answer questions to complete structured notes, about the different types of evidence which support the theory. This is followed by an activity...
Activities
Genome Projects (2025)
This topic explores the concept of genomes in species and in individual cells. There is discussion of variation between the genomes of cells, individuals of a species and between different species. Students...