Echinoderm microfossil dating
Character traits include both discrete (e.g., presence of a heart or globin molecules, type of globins found) and quantitative traits (e.g., four-chambered heart, number of different types of globins).Member of a major phylum (Chordata) within the deuterostomes, which includes the vertebrates and closely allied invertebrates such as tunicates and amphioxus.Any worm of the phylum Chaetognatha, commonly called an arrowworm.This is a transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth. Used in phylogenetic analysis and to study the evolution of traits over time.To line up different DNA, RNA, or protein sequences.
Loci made up of microsatellite repeats (e.g., ATATATAT) in which, when the number of copies of the repeat changes, the phenotype of the cell changes drastically.These are common in the genomes of some bacterial pathogens.Member of a major animal phylum of solitary gelatinous marine animals commonly called comb jellies or sea gooseberries (phylum Ctenophora).For a random-mating population that is in linkage equilibrium, this is equivalent to the average effect.
A A Drosophila chromosome that carries multiple inversions, recessive lethals, and dominant markers.
A scale bar is used to represent the units of measurement.