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9thbiology

9th grade biology (fossils,adaptations,&darwin exploration)

QuestionAnswer
What is the term used to descibe change over time? evolution
The____ has some variations,which over time lead to variations in the traits seen in a population,and are called adaptations. gene pool
What are the two types of evolutionary paths? convergent & diverent evolution
What is speciation? development of new species
What are the 3 main adaptations? physiological,structual,& behavioral
What is a structual adaptation? involes structure or anatomy
A tooth or beak shape/sticky tounge is an example of what kind of adaptation? structual
What is a physiological adaptation? assiociated with functions in organisms
What is an example of phsiological adaptation? blood clotting/venom production
What is behavioral adaptations? response to the environment
What are the methods of studying evolution history? comparative anatomy,comparative embroyology, comparative biochmistry
What are homologous structures? structures in different organisms that developed from common anscestors but became modified in different ways
What is a vestigial organ? homologous structures that were used in anscestors but have become reduced in size & function in present organisms
What are analogous structures? body parts of organisms that dont have common ansectory but are still similar in function
What is comparative biochemistry? study of organisms on a bichemical level to see similarities and differences
What is comparative embryology the study of developing organisms to show relationships not obvious in maature ones
What was the british ship that darwin worked on ? HMS beagle
Where did the the HMS Beagle sail & what was it for? sailed west and east coasts of south america &it was a survey ship making scientific voyages
What were the 3 observations in the galapogos islands that supported his belief that an organism could chnage and adapt to the changing environmental features on earth? 1-found unique forms of life 2-similarities to some other known species didnt exist 3-said similar organisms were related to a common form
nature selecting organisms with desired traits and variety is called.. selective breeding
What are the 6 steps in darwins theory of natural selection? 1-nature has a tendency toward overpopulation 2-not all offspring survive 3-variations exists in populations 4-variations are inherited 5-individuals with suitable variations will survive than those not suitable 6-whole population will adapt over time
The genotypes of an ____ may remain constant but the genes change over time individual
What is population genetics? study of gene pool & how theyy change
Created by: 49842
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