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