ESS261H1 Lecture Notes - Lecture 7: Graptolithina, Arthropod, Bryozoa
Document Summary
The largest group of organisms capable of interbreeding & producing fertile offsprings. Reproductive isolation: taxonomy: relationship b/w living things. Is the science of defining groups of biological organisms on the basis of shared characteristics and giving names to those groups. There exists a hierarchical system based on similarities when it comes to evolution. E. g. cladogram: major vertebrate groups by traits (clade is a group of species w/ common ancestors) E. g. phylogeny: vertebrate branches on the tree of life: 6 kingdoms. Is the 2nd highest taxonomic rank that are divided into smaller groups called phyla. Is the taxonomic rank below kingdoms and divides the animal phyla into 35 smaller groups made up of three body plans: Vast majority of animal species (over 95%) belong to the phyla listed here called the big 9 : Lecture 7: platyhelminth es, nematoda, mollusca, annelida, arthropoda. January 21, 2015: echinodermat a, chordata, evolution. Is the change in heritable traits of biological populations over successive generations.
