52 results found

Search Results for: ancestral

Ancestral

Ancestral Of, pertaining to, derived from, or possessed by, an ancestor or ancestors; as, an ancestral estate. Ancestral... Read More

Apomorphy

Apomorphy Definition Apomorphy (biology definition): A derived trait or characteristic that identifies a species or a... Read More

Divergent evolution

Divergent evolution definition Divergent evolution refers to the process by which interbreeding species diverged into two... Read More

Prokaryotic Ancestor of Mitochondria: on the hunt

The alphaproteobacteria have been widely cited as the closest relative-- and possibly the prokaryotic ancestor -- of the... Read More

Sympatric speciation

Speciation is a process of evolution through which two different existing populations evolve and a distinct species form. It... Read More

Monophyletic

Definition adjective Of, pertaining to, about, or describing that which descended from a single ancestral... Read More

Analogous

In evolutionary biology, the meaning of analogous is “having similarities in functions but different evolutionary... Read More

Vestigial

vestigial refers to an organ or part (for example, the human appendix) which is greatly reduced from the original ancestral... Read More

Allopatric speciation

We can define speciation as a process by which the novel genetically independent group of organisms are formed through the... Read More

Convergent evolution

Convergent evolution definition What is convergent evolution? Convergent evolution is a concept in evolutionary biology... Read More

Monogenism

Definition noun (anthropology) A theory postulating that the species came from only one ancestral line or origin, thus... Read More

Analogous structures

In evolutionary biology, analogous structures are defined as biological structures having similar or corresponding functions... Read More

Homologous structures

Homologous Structures Definition What are homologous structures? Before we define that, let us first identify the meaning... Read More

Analogy

Definition noun, plural: analogies (evolutionary biology) Structural or behavioural similarity in terms of functions between... Read More

Adaptive radiation

Definition noun The diversification of several new species from a recent ancestral source, each adapted to utilize or... Read More

Phylogenetic tree

Definition noun, plural: phylogenetic tree A tree diagram that shows the evolutionary histories and relationships of groups... Read More

Red algae

The red algae belong to the phylum Rhodophyta which literally was derived from the Greek word ῥόδον (rhodon), meaning... Read More

Archamoebae

Definition noun A taxonomic class in Phylum Amoebozoa characterized by the absence of mitochondria Supplement Archamoeba... Read More

Alphaproteobacteria

Definition noun A taxonomic class belonging to the phylum Proteobacteria that includes phototropic proteobacteria,... Read More

Acinetobacter guillouiae

Definition Noun A gram-negative aerobic bacterium which contains an enzyme involved in the resistance to an active... Read More

Chromosome 2

Definition noun In humans, the autosome that is considered as the second-largest, spanning more than 242 million base pairs,... Read More

Chloroplast DNA

Definition noun plural: chloroplast DNAs DNA in the chloroplast that carries the code for proteins and RNAs essential to... Read More

Genetics and Evolution

Tutorials in Genetics and Evolution immerse on the molecular aspects and the works of nature that led to what every living... Read More

Polyphyletic

Definition adjective Taxonomic groups that have similar character states that descends from one or more ancestral... Read More

Paraphyletic

Definition adjective A biological taxonomy that pertains to a certain group of organisms does include some but not all of... Read More

Mitochondrial DNA not just from moms but also from dads?

If one wants to trace down lineage, that person could turn to the cell's powerhouse, the mitochondrion. This organelle... Read More

Polygenism

Definition noun (anthropology) A theory depicting the genesis of a species, i.e. the species came from more than one... Read More

Vestige

A vestige, in biology, refers to the vestigial structures. Etymologically, the term came from the Latin vestīgium, meaning... Read More

The Crucible of Creation: The Burgess Shale and the Rise of Animals

The Crucible of Creation: The Burgess Shale and the Rise of Animals     ... Read More

Molecular Biology of the Cell, Fourth Edition: A Problems Approach

      AUTHORS:  Wilson/ Hunt PRODUCT DETAILS:... Read More

A Look Into Natural Selection and its Mechanisms

Charles Darwin is credited with outlining the fundamentals of evolution. He was a smart and eager pupil and protégé,... Read More

Pedigree

Definition noun (1) An ancestral line or chart depicting the lineage or descent of an individual. (2) (genetics) A diagram... Read More

Kindred

Kindred 1. Relationship by birth or marriage; consanguinity; affinity; kin. Like her, of equal kindred to the throne.... Read More

Vertical classification

vertical classification (Science: zoology) classification which stresses common descent and tends to unite ancestral and... Read More

Archaic

Archaic Ancient; old; in jungian psychology, denoting the ancestral past of mental processes. Origin: g. Archaikos,... Read More

Deoxyribonucleic acid

Deoxyribonucleic Acid (DNA) Definition A nucleic acid refers to any of the group of complex compounds made up of linear... Read More

Degenerate

Degenerate means to become worse or less of its kind or former state. In biology, it means an entity performs the same... Read More

Kinship

Kinship relationship by marriage or, specifically, a blood tie. The relation of organisms due to a common ancestral... Read More