Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
what is evolution?
|
change in species over time
|
|
when was the "period of exploration"
|
1500s
|
|
who is given credit for acquired characteristics?
|
lemarck
|
|
explain acquiring characteristics
|
the idea things are related/pass info
|
|
when was darwin's book first wrote and what was it called?
|
1859 (before cival war), On the Origins of species by means of natural selection
|
|
what are the five theories in darwin's ideas?
|
1-perpetual change: the world is always changing
2-common descent: all forms of life desended from common ancestor 3-multiplication of species: new species from splitting and transforming old ones 4-gradualism: big changes comes from little ones taking place over millions of years 5-natural selection: favorable traits survive, survival of the fittest |
|
what is a branching evolutionary tree called?
|
phylogeny
|
|
what is neo-darwinism?
|
incorporating Gregor Mendel's chromosomal theory of inheritancee
|
|
what was Lemarck famous for?
|
first theory of evolution by means of acquired characteristics-1809 year of Darwin's birth
|
|
what is Charles Lyell known for?
|
uniformitarianism-laws of physics/chem stay the same and 2-geological events occured by natual processes like today
|
|
what president was born on the same day as darwin?
|
lincoln
|
|
what disease did darwin acquire from the kissing bug?
|
chargis
|
|
who is George Wallace?
|
independently thought of same evolution, wrote letter to darwin which spurred him to write Origin of Species
|
|
what are the observations and inferences of natural selection/
|
ob 1-organisms have great potential fertility
ob 2-pop stay constant ob 3-natural resources are limited inference 1-there is a contining struggle among members of pop. for survival ob 4-pop. show variation ob 5-some variation is hertiable in 2-organisms show differential survival and reproduction favoring advantageous traits in 3-adaptions occur over mill of years and thus new species over time |
|
what is the hardy-weinberg equilibrium?
|
shows how things change over time, gene frequency
|
|
what is fitness in biology terms?
|
one who reproduces mot is most fit
|
|
how can genetic equilibrium be upset?
|
1-genetic drift: random loss of alleles, etc
2-nonrandom mating 3-migrations 4-natural selection 5-reacurring migration |
|
what is a type of artifical selection?
|
domesticating animals
|
|
what is some examples of a species that has not changed?
|
dragonfly and crocodile
|
|
what is speciation?
|
the evolutionary process where a new species emerges
|
|
what is a species?
|
a group of organisms that reproduce only with ea other, share common ancestry, one gene pool
|
|
what is a sub-species?
|
denotes the area of a certain animal
ex=brown bear or grizzy bear |
|
Linneaus
|
creating binomial species description
|
|
how should a Genus species name be written?
|
underline Homo sapien
|
|
what are some drastic mechanisms?
|
castrophies, hit by asteroid, climate change, adaptive radiation
|
|
what are some advantages to reproducing asexually?
|
don't need a mate, no energy required
|
|
what are the types of symmetary?
|
circular, radial, bilateral, sagittal plane: divides into right and left
|
|
explain the process through fertilization to development of embryo
|
2 cells (egg/sperm) come together, form zygote, starts dividing by clevage, reaches state of cells around hollow center=Blastula, cells moves in by Gastrulation forming Gastrula
|
|
What is the protostoma?
Deuterostomia |
proto=1st mouth
deuterostomia=2nd mouth |
|
what is diploblastic?
|
2 sets of layers of cells
|