Genetics Notes – Pt 1. Gregor Mendel “father” of genetics Austrian Monk Watched how traits passed…
REPORTING CATEGORY 3. #8-GENETIC DIVERSITY SURVIVAL OF THE FITTEST -Traits that have advantages lead...
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Transcript of REPORTING CATEGORY 3. #8-GENETIC DIVERSITY SURVIVAL OF THE FITTEST -Traits that have advantages lead...
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REPORTING CATEGORY 3
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#8-GENETIC DIVERSITY
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SURVIVAL OF THE FITTEST
-Traits that have advantages lead to increased fitness-Traits will be passed down to offspring-Fitter organisms reproduce more often-Weaker organisms die out before they are able to reproduce-Frequency of genetic traits will increase over time in a population
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#15-GENE FLOW
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INTRODUCTION OF GENES INTO NEW POPULATION
-Gene flow, aka migration, is any movement of genes from one population to another-Can lead to increased genetic variation-Examples are human immigration to a new country or pollen carried on the wind
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#28-TAXONOMY
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TAXONOMIC GROUPS USED TO SHOW RELATIONSHIPS
Taxon ( taxa-plural) is a category into which related organisms are placed
There is a hierarchy of groups (taxa) from broadest to most specific
Domain, Kingdom, Phylum, Class, Order, Family, Genus, species
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#8-CLASSIFICATION
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CHARACTERISTICS OF KINGDOMS
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#52-HOMOLOGOUS STRUCTURES
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-Structures That Have Different Mature Forms But Develop From The Same Embryonic Tissues-Strong Evidence That All Four-Limbed Animals With Backbones Descended, With Modification, From A Common Ancestor
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#39-ADAPTATIONS
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SURVIVAL OF THE FITTEST
Adaptations Can Be:PhysicalSpeed, Camouflage, Claws, Quills, Mimicry, etc.
BehavioralSolitary, Herds, Packs, Activity, etc.Traits must be inheritable to be passed on generation to generation
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#25-COMMON ANCESTRY
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COMMON DESCENT WITH MODIFICATION
Darwin proposed that organisms descended from common ancestorsIdea that organisms change with time, diverging from a common formCaused evolution of new species
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#19-DICHOTOMOUS KEYS
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USED TO CLASSIFY
ORGANISMS
-Used to identify organisms-Characteristics given in pairs-Read both characteristics and either go to another set of characteristics OR identify the organism
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#54-CLASSIFICATION
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#3-TAXONOMY
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STANDARDIZED SYSTEM
Classification is the arrangement of organisms into orderly groups based on their similarities
Classification is also known as taxonomy
Taxonomists are scientists that identify & name organisms
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#34-FOSSIL RECORD
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IDENTIFY ANCESTRY AND PHYLOGENY
-history of life as documented by fossils-changes observed within an animal group are used to describe the evolution of that group-can see effects of natural selection on a species over a large period of time