Is it the data or the theory?
Jean-Baptiste Lamarck proposed the idea that evolution occurs, but he did not suggest how
it occurs. Darwin’s theory of evolution by natural selection did discuss how evolution occurs.
Though Darwin agreed with Lamarck that evolution occurs, he differed with Lamarck on
several other points. Lamarck proposed that traits acquired during one’s lifetime could be
passed to the next generation. We now this is does not occur.
Discuss with the class how some data may not agree with an accepted scientific theory
because sometimes the data is mistaken or fraudulent. Other times the theory may be
wrong.
Science and Society
In this activity students will investigate a science-based societal issue by researching the
literature, analyzing data, and communicating the findings. Students should incorporate
concepts from biology and ecology into their responses.
Habitat Destruction
- Ask students if they understand that habitat destruction and biodiversity are related.
How do they think these concepts might be intertwined? Begin discussion and accept
all answers, writing some notes on the board. - Havestudentsresearchthistopic, analyzingavailabledateandpresentingtheirfindings
to the class.
Students may choose to research the consequences of:
- clearing habitats of vegetation for purposes of agriculture and development
- habitats destruction by natural causes (lightning, earthquakes, fires, hurricanes, ice
storms) - habitats destruction by humans
- within the past 100 years, the significant increase in the area of cultivated land world-
wide - the destruction of habitats on the species living in the habitats.
Science and Math
The Hardy-Weinberg Equation
Using a hypothetical rabbit population of 100 rabbits (200 alleles), determine allele frequen-
cies for color: