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Biology 1543 with Roberts at University of Arkansas - Fayetteville
About this deck
By: Claire Ashby
Textbook:
Campbell Biology: Concepts & Connections with MasteringBiology® (7th Edition)
Created: 2011-10-30
Size: 38 flashcards
Views: 22
Textbook:
Campbell Biology: Concepts & Connections with MasteringBiology® (7th Edition)Created: 2011-10-30
Size: 38 flashcards
Views: 22
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evolution is what type of science?
hypothesis science
aristotle and early judeochristiam culture believed species were ?, but there were exceptions
fixed (didnt change over time)
in the century prior to darwin, the study of ? suggested that life forms change
fossils
what are fossils? who studies them?
imprints or remains of organisms that lived in the past
palientologists
geologists study what? they eventually proposed that what?
study the physical nature and processes of Earth
proposed that a very old Earth is changed by gradual processes
darwin didnt use the term evolution. he called his idea what?
descent with modification
what was darwin's basic idea?
that living species arose from earlier life forms and species changed over time
darwin proposed ? as the mechanism of evolution
natural selection
in determining this, darwin observed what two things about organisms?
1. organisms produce more offspring than their environment can support
2.organisms vary in many characteristics that can be inherited
darwin reasoned that natural selection leads to ? being represented more and ? less in future generations or organisms
favored traits
unfavored traits
what is a population?
groups of individuals of the same species living in a defined area
what is a species?
a group of populations whose individuals can interbreed and produce fertile offspring
what is artificial selection? give the example.
selective breeding of domesticated plants and animals
veggies (in picture) were all created from the wild mushroom plant
natural selection takes time... approx.?
thousands to millions of years
the study of ? provides strong evidence for evolution
fossils
fossils reveal that organisms have evolved in a ?
historical sequence
many fossils link ? with species living today
early extinct species
what are vestigal organs?
remnants of structures that are currently marginally important but were probably very important in ancestors/ older times
what is comparative anatomy?
comparison of body structures in different species
intermediate forms aka ?
missing links
birds are ? supported by fossil evidence
living dinosaurs
what is the missing link between fish and amphibians(aka?)
amphibians aka 1st tetropods
Tiktaalik roseae
some defining features of the tiktaalik roseae
ability to rotate its neck and wrists leads to better land movement and help against predators
other evidence supporting evolution includes?
biogeography
comparative embryology
comparative anatomy
what is biogeography?
the study of distribution of life forms over space and time that reveals where the organism lives, the abundance, and why they live there
the geographic distribution of species suggests that organisms?
evolve from common ancestors
what is comparative embryology?
the study of the similarities/ differences in the development of different organisms while they are still a developing embryo
what are homologous structures? what is an example?
features that often have different functions but are structurally similar because of common ancestry
human arm, cat leg, whale fin, and bat wing
what is molecular biology?
comparisos of DNA and amino acid sequences between different organisms that reveal evolutionary relationships
secual selection may produce?
sexual dimorphism
what is sexual dimorphism?
the manifestation of the secondary sexual characteristics
genetalia is...
the primary sexual characteristic
males and females of many species are ?. this if often the result of ?
physically different.
competition for mating partners.
what are the two types of mate selection?
intrasexual and intersexual
what is intrasexual selection?
when the males combat and the winning male gets all the females
what is intersexual selection?
when each sex is choosing (female is the choosiest)
what is an example of natural selection in action?
the development of pesticide resistance in insects
loss of variation is bad because..
it means there is a loss of ability to adapt to environmental changes
About this deck
By: Claire Ashby
Textbook: Campbell Biology: Concepts & Connections with MasteringBiology® (7th Edition)
Created: 2011-10-30
Size: 38 flashcards
Views: 22
Textbook:
Campbell Biology: Concepts & Connections with MasteringBiology® (7th Edition)Created: 2011-10-30
Size: 38 flashcards
Views: 22
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have used this website for three exams, and I see a huge difference in my test results.”
Naj
Naj