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If Lamarck's hypothesis of species modification were true, the children of a person who developed large muscles by lifting weights would be born with what size muscles?
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When Darwin saw fossil shells of marine organisms in the mountains, he reasoned that:
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Biology Ch. 15

Modern Biology Ch. 15

QuestionAnswer
If Lamarck's hypothesis of species modification were true, the children of a person who developed large muscles by lifting weights would be born with what size muscles? Larger than average
When Darwin saw fossil shells of marine organisms in the mountains, he reasoned that: ancient rock beds that were beneath the sea were elevated to from mountain ranges
Darwin's theory of descent with modification states that: Newer forms appearing in the fossil record are the modified descendants of older species
According to Darwin's theory of modification through natural selection, organisms with what tend to leave more offspring? more favorable traits
In an evolutionary sense, an individual organism has high fitness if it: reproduces more successfully than other individuals
How did Thomas Malthus influence Darwin's thinking about evolution? Malthus stated that a population has the ability to double its size which sparked his idea of natural selection
What is the relationship between evolution and natural selection? E#volution is the changing of one species into a more advanced species. Natural selectionstates that the more fit speacies has a higher survival rate and ultimately creates more offspring which have the same traits as its parent
Acquired Trait one that is not determined by genes
Natural selection Organisms best suited for their environment reproduce more successfully than others
Population Interbreeding species group
Uniformitarianism THe geological structure of earth resulted from cycles of observable processes and these same processes operate continuously
Adapt Get used to, acquire traits to better settle in an anvironment
Fitness Organism with higher fitness is better adapted
Adaptive advantage Favorable trait
Acquired Trait Not determined by genes; Results from organism's lifetime activities, experiences and behaviors. Not passed on to offspring.
Genetic Trait Trait is determined by genes. Is passed on to offspring
List details about Darwin's important observations a. Chile - Andes Mts. - Marine fossils evidence of geological change over millions of years b. Galapagos Islands - many similar species of finches - same except for bill/beak - there was a common ancestor!
Explain Darwin's theory of Descent by Modification States that the newer forms appearing in the fossil record are actually the modified descendants of older species All species had descended from one or a few common ancestors
Describe Darwin's theory of Modification by Natural Selection States how evolution occurs. Some organisms have traits that make them better suited for the environment. These organisms thus reproduce and have more offspring. This process changes the genetic makeup of species population
Fitness An organisms attribute that allows it to reproduce more successfully
Describe the steps of Electrophoresis aka DNA Fingerprinting 1. Restriction enzyme cuts into DNA fragments 2. Place DNA into gel and turn on electricity 3. Fragments separate based on size 4. DNA is negatively charged so fragments move toweards positive end of gel
How is Electrophoresis used in life today? Criminal investigations Distance from origin Paternity Cases To investigate origins of species (phylogeny)
Describe what happened in the Natural Selection Lab THe spoonasaurus was the most fit. Fitness is an organisms contribution to the genetic makeup of species population
Describe Descent with Modification and how it applies to the AIDS virus HIV has evolved over they yearsa, it multiplies and becomes resistant to drugs. Take drugs away, wild ones come and can be treated.
Created by: myoung15
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