4.3 VIDEO RESOURCES Video #1: An Illustrated Introduction:
https://youtu.be/8yvEDqrc3XE
Video #2: Types of Speciation:
https://youtu.be/fAajKkjjLCQ
Video #3: Forms of Reproductive Isolation:
https://youtu.be/kvT4JLdWg2c
Unit IV. EVOLUTION Topics : 4.1
The History of Life on Earth
4.2
Darwinian Theory of Evolution
4.3
Speciation
4.4 Micro and Macro Evolution 4.4 Content Learning Objectives •
Student will be able to distinguish between microevolution and macroevolution.
•
Student will be able to explain how microevolution differs from macroevolution with regard to
species.
•
Student will be able to explain why the study of microevolution and macroevolution is
important.
4.4 Language Objectives •
Student will identify and define topic key vocabulary.
•
Student will use Reading Resource to identify word, sentence, and paragraph grammar
structures.
•
Student will use Reading Resources to practice Reading Resource strategies.
•
Student will restate (orally or written) Science and Biology definitions and main ideas using
content-specific terms.
•
Student will organize information using a variety of graphic organizers according to content-
specific expectations (e.g., Steps of The Scientific Method).
4.4 Reading Resources #1 Population Genetics
#2 Macroevolution
#3 Extinction is a Critical Component of Evolution
4.4 Reading Resource #1 : Population Genetics Individuals, each with their own genotype, make up populations. An individual’s genotype in diploid
organisms, which have pairs of homologous chromosomes, includes two copies of every gene. The
population’s gene pool is the sum of all gene copies at all gene loci in all individuals.
To describe the structure of a gene pool, scientists first identify the genotypes in a representative
sample and calculate genotype frequencies, or the percentages of individuals who have each genotype.
Knowing that each diploid organism has two copies of each gene (either two copies of the same or two
different s), a scientist can calculate frequencies, which are the relative abundances of the various s. For a
