Download Chapter 23: An Introduction to Evolution

Chapter 23:
An Introduction to Evolution
Supplemental Instruction
Iowa State University
Leader: Adam
Course: Biology 211
Instructor: Dr. Holscher
Date:
1. Describe Extranuclear Inheritance
2. When one X chromosome in the somatic cells of mammals in inactivated during
embryonic development, meaning that its genes are not expressed is known as what?
What forms as the inactivated chromosome?
3. Describe Maternal effect
4. A particular allele can have different effects if it is inherited from a male rather than a
female. This phenomenon is known as ___________.
5. How do Species and Population differ?
i. Species:
ii. Population:
6. Which is the smallest unit that can evolve; species or population?
The people involved and their Proposals
_____ Developed the study of fossils, opposed evolution, Advocated catastrophism
_____Founded taxonomy, binomial nomenclature
______ Developed a theory similar to Darwin’s accept 20 years after.
_____1st to state evolutionary change but had the wrong mechanism. Hypothesized that species
evolve through use and disuse and through the inheritance of acquired traits.
_____First scientist to carry out a thorough study of the living world, developed an early
classification system, established the modern concept of a species
_____This person’s view on life was descent with modification
_____Advocated Uniformitarianism (mechanism of change are constant over time)
A. John Ray B. Carolus Linnaeus C. Georges Cuvier D. James Hutton/Charles Lyell
E. Jean-Baptiste de Lamark F. Charles Darwin G. Alfred Wallace
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu
1. Would you describe Charles Darwin as an observational biologist or an experimental
biologist?
2. What island and what type of bird did Charles Darwin much of his research?
3. Darwin’s publication in 1858 was called what?
a. He did not use what term in the publication?
4. According to Darwin, evolution may occur from generation to generation due to two
interacting factors. They are?
i.
ii.
5. What are the observations that support evolution?
i.
ii.
iii.
iv.
6. The independent evolution of similar features in different lineages is termed what?
7. What are the 3 types of Homology?
i.
ii.
iii.
8. The ______ species concept defines a species in terms of its genome sequencing.
9. Homologous genes that are in different species are termed?
10. Two or more homologous genes found within a single species are termed?
11. New species arise from pre-existing species by the accumulation of genetic changes is
termed?
12. A process in which an organism incorporates genetic material from another organism
without being the offspring of that organism is referred to as what?
13. A hypothesis that has been tested and is well supported by data is known as?