Countries: CA

Demonstrates the effect of intraspecific and interspecific competition on populations. Uses simulations and field trips to examine the relationship between predators and prey, and explore the various symbiotic relationships among organisms.

Outlines the principles which form the basis of classical genetics. Demonstrates the experiments that Gregor Mendel conducted on pea plants and reveals the laws of inheritance. Probability and Punnett squares predict the results of monohybrid crosses.

Uses the analogy of square dancing to introduce dihybrid crosses. Illustrates how the laws of inheritance for monohybrid crosses also apply to dihybrid crosses. Demonstrates how probability and the product rule determine the outcome of trait crosses.

Reveals how knowledge of Mendelian genetics, blood groups, and pedigrees can be used to solve a paternity case. Examines other patterns of human inheritance involving skin colour, eye colour and height.

Looks at exceptions to segregation and independent assortment during gamete formation. Examines the effect of gene linkage on phenotypic and genotypic ratios. Uses cross-over values in Sordaria to determine the distance of a gene from the centromere.

Examines the findings of Thomas Morgan regarding sex-linked inheritance. Investigates the probabilities of males and females inheriting sex-linked traits such as colour blindness and hemophilia. Uses graphics to analyse sex-linked traits.

Describes the events that occur once fertilization of the ovum has taken place. Explains the various stages of embryonic development and differentiation using slides and models. Presents theories on various mechanisms that trigger cell differentiation.

Outlines development during each trimester of pregnancy and the hormones involved in regulating fetal development, birth and lactation. Illustrates the mechanism for exchanging nutrients and wastes between mother and fetus.