BIO120H1 Lecture 13: Lecture 13.docx

32 views2 pages

azureotter600

18 Apr 2012

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

shdhhfhshhpla3806 and 40102 others unlocked

BIO120H1 Full Course Notes

Verified Note

36 documents

Document Summary

Living things change gradually from one thing to another. Static world replaced with ever changing world. One generation gets longer neck and passes on trait. I get a tan, doesn"t mean i will pass on tanned skin. Pasing on occurs through gametes, not somatic cells. Discovery of correct mechanism: alfred douglas wallace(naturalist who idealized darwin) 2. Events leading up to the origin of species . After return from return of beagle 20 years taken up with accumulation of evidence for the theory of evolution. 1844: wrote but did not publish an essay on natural selection. June 1858: received on tendancy of varieties to depart indefinitely from the original type by a. r wallace. July 1858: linean society presentation in london of darwin wallace paper (jointly presented, neither present) (wasn"t to controversial) 1859: publication of the origin of species by means of natural selection or the preservation of favoured races in the struggle for life. (0nce published it became big deal)

Related Questions

1. James Hutton was the first to propose that geological change occurred gradually by the accumulation of small changes from processes that are occurring today, but who was the first to popularize this idea with additional geological evidence and to inspire Darwin to consider that the earth is millions of years old instead of only thousands of years old?

Charles Lyell

Charles Darwin

Jean-Baptiste Lamarck

Aristotle

Aristotle was perhaps the first person to classify organisms, but who was the first to develop a systematic approach to classifying organism in the 1700s that is still partly used today?

Galen

Carl Linnaeus

Stephen J. Gould

Ernst Mayr

A multicellular eukaryote that contains cell walls but is not capable of photosynthesis is most likely a(n)

fungus

plant

bacteria

animal

Which of the following best explains the significance of Charles Darwinâs contribution to biology?

		Darwin was the first to suggest a plausible mechanism of evolution and provided several lines of evidence to support evolution and his mechanism.
		Darwin was the first person to suggest a mechanism for evolution.
		Darwin was the first to suggest that animals descended from other animals.
		Darwin was the first to suggest that fossils were evidence of organisms that no longer existed.

Botany Chapter 15: Text Book Assignment (12th Ed.)

1) Suggesting that Natural Selection was the main mechanism for evolution came originally from Darwinâs knowledge of what?

2) Why would an invasive species be able to out compete native species, sometimes to the point of extinction?

3) What was the main problem with Lamarckâs theory of âacquired characteristicsâ once the principles of genetics were discovered?

4) Why would a small change in a homeobox gene have a very large, rapid effect on evolution?

5) What general idea did Darwin take from geologists that let to his concept of biological change?

6) Why is overproduction important for a speciesâ long-term survival?

7) In the example of a tree evolving thicker bark, what is the selective force?

8) How can geographic isolation lead to speciation?

Which of the following statements is true about the theory of evolution?

The focus of the theory of evolution is to explain the origins of life.

According to the theory of evolution, life evolved entirely randomly.

The focus of the theory of evolution is to explain how life diversified from the first living cells.

According the theory of evolution, only the strongest and toughest can survive.

Which of the following best explains our current understanding of microevolution?

Neither microevolution nor macroevolution can be observed within a human lifespan?

Microevolution is the gradual change of the genetic makeup (allele frequency) of a population over time.

Microevolution and macroevolution occur by very different mechanisms

Microevolution is the evolution of small organisms; macroevolution is the evolution of large organisms.

The Irish elk is a giant species of deer that went extinct about 5,000 B.C. They are well-known for their extremely large antlers (12 feet wide) in males. The antlers likely played some role in protection against predators, but another possible cause for their large size could be

blending genetics

sexual selection

spontaneous generation

inheritance of acquired characteristics

Cross River gorilla is listed as critically endangered species. With only 35 of these gorillas in the world, they are at risk of extinction largely due to poaching and loss to diseases such as Ebola. Genetic studies of the remaining gorillas show very little variability, because several alleles were likely lost due to ______.

		genetic drift
		gene flow
		increased rate of spontaneous mutations
		adaptive radiation

BIO120H1 Lecture 13: Lecture 13.docx

BIO120H1 Full Course Notes

Document Summary

Get access

Related textbook solutions

Molecular Cell Biology

Biology: Science for Life with Physiology

Concepts of Biology

Biology

Essentials of Biology

Related Documents

BIO120H1 Lecture Notes - Lecture 13: Special Creation, Gradualism, Theodosius Dobzhansky

BIO120H1 Lecture Notes - Lecture 4: Scientific Theory, Genetic Variation, Botany

BIO120H1 Lecture Notes - Lecture 2: Germ Plasm, Theodosius Dobzhansky, Special Creation

Related Questions