Cratægus oxycantha.—A dark pink hawthorn has been known to throw out a single tuft of pure white blossoms;18
Mr. A. Clapham, nurseryman, ofBradford, informs me that his father had a deep crimson thorn grafted on a white thorn, which, during several years, always bore, high above the graft, bunches of white, pink, and deep crimson flowers.
Darwin was staying in Ilkley and taking water cure treatments when ‘On the Origin of Species…’ was published in November 1859
Young Earth Creationism is the idea that God created the world sometime in the last 10,000 years.
In your opinion is Young Earth Creationism…
“The diversity of organisms, similarities and differences between kinds of organisms, patterns of distribution and behaviour, adaptation and interaction, all this was merely a bewildering chaos of facts until given meaning by the evolutionary theory.”
“Science simply cannot … adjudicate the issue of God’s
1.A Historical perspective: One strategy for confronting creationist’s views is to take a historical perspective. Explaining how the theory of evolution by natural selection developed allows the teacher to take a more less
2.Human Evolution: A practical that explores human bipedalism and larger brain size. Measurements are performed on hominid fossil material and the students themselves. The necessary pictures needed to do the exercise can be downloaded.
3.Taxonomy: Phylogenetic trees provide a powerful image/metaphor to explain some important evolutionary concepts. Students choose phenotypic characters for a range of organisms and these are fed into a computer programme reveals the similarities and differences between the organisms. The practical can be delivered in a variety of ways, from the class room through to zoo visits.
4. Evolution in action: Variation, mutation and selection in plants: An experiment that demonstrates some of the components of evolution. Arabidopsis plants are grown in the presence or absence of sodium chloride and measurements of rate of development demonstrate both variation and the selective effect of stress.
5. Evolution of complexity: Evolution theory is often critisised for being unable to explain how chance can generate complex organs such as the eye. However Natural selection is a combination of random mutation and non-random differential survival. An 'Excel' exercise to demonstrate how complexity can be rapidly produced by chance plus selection is available.
6. Dealing directly with Creationist arguments: A creationist document arguing that plants cannot have evolved by Darwinian evolution has been annotated with over 80 the counter arguments and can accessed online.