Evolution #1 Flashcards
evidence 1, land to water
skull, similiar to wolf, bump, found in pakistan
bump in evidence 1, land to water
inner ear, distinctive shape only found on whales
modern whale
evolved from land animal similiar to wolf
evidence 2, land to water
meditterean sea (valley of whales), skeletons of bassalasador (found leg bones (pelvis, knee cap toes) with \_\_\_\_\_\_ were vestigal) wolf to lose legs to whales
valley of whales
full of whales
bassalasor
only water
bestigal
have no funcation today but had afunction in past
ex: abendix, tail bone, body hair
Common ancestor
transitional forms in whale evolution (have fossils)
sanomix, pakicetus, ambulocetus, basilosarurous, rodhocetue
evidence 3, land to water
mammals spine up and down
evidence 1, for water to land
tetropod shoulder, tictalic (name of shoulder bone found)
tetropod shoulder
lived in water with limbs
water to land
think fish developed legs in water and then get out of water
evidence 2, water to land
complete tetropot skeleton, greenland, forelimb: had one bone, 2 bones, wrist and small bones
limbs evolved
limb: hand, pedal skeleton
fish had arms and legs, limbs evolved
canbery explosion evidence:
fossils from british columbia, 1913,the virgis shales, shwoing diveristy,
backboen in explosion
earliest ancestry of all vertebrae
embryos
start, cluster of cells, take shape
hox genes
all anaimals posses same genes, genes from mouse eyes into of fruit fly and develop same eyes
radiation, poisoned
change body by attacking dna, dna cause embryo to divide
single genes
each affect a different part of body, if different genes, results lighted up genes (part of embryo)
change of genes
isolate gene for eyes for fruit flys, were genes for fruit flys and mice, use same mechanism and genes
4
human ancestors out of tree and source of food change from up to ground, to walking
evidence for walking, 1
lemurs, primates like this, felixible
evidence for walking, 2
chimpanzee, share of bones in skeleton (differences), knuckle walking (adaption, differences), pelvis and skull and kness: differences
transitional forms
transitioning to being some, example: archeop teryx (furry reptile)
living fossils
thought to be extinct but fisherman found it
lob, fined fish, beginning of four limb structures, coelacanth
homology
due to divergence from a common ancestor
4 limbed fish
homoninds
to leg walking, lucy
homologous
have same basic structure, but not function, evidence for divergent from common ancestor, all modern tetropods, survival in most vertibae ake,
tetropod
four limbs
radial symmestry
coming out of one point, shape of wheel, no front or back, starfish and jellyfish
divergence
all come from same ancestor
vestigal structures
tail bone, hair, darwins point, appendix, caning teeth, whale hip bone, hipbone of python
hox genes
gene that everyone has, responsible for different part of body
analogy
superficially, wing of bird and butterfly, similiar structures and same function
evidence for covergent
convergent
unrelated ancestors, give rise to descentant, similiarity of function and structure, but descendents not related
Have superficial similar structure and function and evolved in similar habitats
microevolution
evolution observed, small changes in a population over short period of time, peppered moth
same species
peppered moth
england industrial revolution, to variation, antibiotic resistance, pestidie resistance, white= more than dark, smoke go to trees and buildings
population
individuals of smae species in same area
antibiotic resistance
multi drug resistant of turbruculosis, ear infections, staff, virsus
MICROEVOLUTION
pesticide resistance
bugs can become resistance to pestiticide
MICROEVOLUTION
comparactive embryology
compare embryology, similiarites in tails and gills
evidence for common ancestor
artifical selection
human pick characteristics they want (dog breeding, ancestors of wolf, cat, crops, wild mustard ancestor of cabbage and cauliflower
hybrid
2 combined into one, evolution, (nectarine)
comparative bio chemistry
compare amino acid sequence of proteins of different species, find cytochrome had one difference in humans and chimps
Fossils
Have transitional forms
s
fossils Transitional forms living fossils homologous vestigial Hox genes Analogy Antibiotic and pesticide rest stance Comparative embryology