Old School Vertebrates Flashcards
1
Q
deuterostomes
A
chordates hemichordates and echinoderms
2
Q
What distinguished deuterostomes
A
blastopore from embryo form anus
3
Q
homologous
A
2 structures derived from same tissue during development
4
Q
vertebrates
A
mammals birds and coelacanth
5
Q
metameric segmentation
A
identical segments
6
Q
hox genes
A
segment identity
7
Q
paedomorphosis
A
bilateral larval forms give rise to primitive filter feeding vertebrates
8
Q
lancelets
A
fish like chordates
9
Q
agnathans
A
jawless
hagfish and lampreys
10
Q
ostracoderm
A
armoured jawless fish
11
Q
jaws were acquired from
A
gills slits
12
Q
gnathostomata
A
jawed fish
13
Q
chondricthyes
A
sharks
14
Q
ostereichthyes
A
teleost and tetrapods
15
Q
actinopterygii
A
ray finned fish
