draw a phylogeny with the following taxa: ray finned fishes, Lamprey, hemichordates, cnidarians, holocephaians, elasmobranchs and ascidians
Added by Gregorio G.
Step 1
The taxa provided are: - Ray-finned fishes - Lamprey - Hemichordates - Cnidarians - Holocephalians - Elasmobranchs - Ascidians Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 60 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Given the following character matrix, try to construct a phylogenetic tree showing the relationship among these taxa: For a little help: Identify the character that is shared by the most taxa first, then the character that is shared by the next greatest number of taxa. This should help you determine the nodes, synapomorphies, and monophyletic groups in the phylogeny of these groups. Don't worry if you don't feel like you can do it. You will get more practice in class with your instructor. Amniotic egg Post-orbital fenestrae: holes in the skull surrounded behind the eye Hair Primates Embryo protected by the moisture-retaining amnion membrane Rodents and rabbits Amniotic egg Two post-orbital fenestrae Crocodiles and relatives Four limbs Dinosaurs and birds Amphibians Bony skeleton Vertebrae Ray-finned fishes Sharks
Madhur L.
Make a tree with the major groups of chordates and key homologies within the tree of chordates (the derived characters used to make your tree). Include: Echinodermata Lancets Urochordata Hagfish Lampreys Chondrichthyes Ray-finned fish Coelacanths Lungfish Amphibia Lizards Birds Monotremes Marsupials Placental mammals
Nayan G.
Drag the following names and characters to their correct location on the cladogram: Placoid scales, claspers Cyclostomata Sarcopterygii Osteichthyes Jaws from mandibular arch, 3 pairs semicircular canals, internal pelvic and pectoral girdles Elasmobranchii Vertebrata Agnatha Chondrichthyes Lungs or swim bladder derived from gut, endochondral bone Naked skin with slime glands, accessory hearts Actinopterygii Gnathostomata Myxini Petromyzontida (hagfishes) (lampreys) Holocephali (chimaeras) Actinistia Dipnoi (coelacanths) (lungfishes) Tetrapods Limbs used for terrestrial locomotion "Placoderms" "Acanthodians" Loss of scales, teeth modified as grinding plates "Ostracoderms" Disk-like buccal funnel, long larval stage as ammocoete, Unique supportive elements in skeleton of girdle and limbs Part of second visceral arch modified as supporting element for jaws, teeth with dentine Teeth formed from keratin Mineralized tissue in dermis
Adi S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD