BIOA01H3 Lecture Notes - Lecture 9: Naegleria, Meiosis, Amoeboid Movement

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Robin Marushia

Document Summary

Ideal type of taxonomic grouping reflects evolutionary relatedness. All systematics use monophyletic taxa in classification. Monophyletic taxa include one ancestral taxon and all its descendants. But traditional evolutionary systematics and cladistics sometimes come to different conclusions about taxonomic groupings. Groups taxa based on shared derived characters. Contain an ancestor and some but not all descendants. Not intentionally used in modern systematics and they are remnant of old style of grouping based on similarity: why it matters, (cid:862)ki(cid:374)gdo(cid:373)(cid:863) protista: co(cid:373)(cid:373)o(cid:374) characteristics a(cid:374)d di(cid:448)ersity. Most common intestinal parasite in north america and can alter surface proteins to evade your immune system chronic or recurrent infections (cid:858)ki(cid:374)gdo(cid:373)(cid:859) protista is paraphyletic. Some argue it is a collection of kingdoms (8-30) Classification does not reflect evolutionary relatedness (cid:858)catchall(cid:859) category. = a(cid:374)ythi(cid:374)g that is(cid:374)(cid:859)t prokaryote, fu(cid:374)gi, a(cid:374)i(cid:373)al, or pla(cid:374)t. Origin is about 1. 5-2 billion years ago. Critical process: endosymbiosis gave rise to mitochondria and chloroplasts. All other eukaryotes arose from protest ancestors.