100 results found

Search Results for: segment

Axon hillock

Axon Hillock Definition What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More

Intermaxillary segment

Intermaxillary segment The primordial mass of tissue formed by the merging of the medial nasal prominences of the embryo; it... Read More

Parasegment

Definition noun, plural: parasegments The fundamental unit of Drosophila development, which is made up of portions of two... Read More

Segment

segment (Science: biology) A portion of a larger body or structure, set off by natural or arbitrarily established... Read More

Transcription (biology)

In biology, transcription is the process of transcribing or making a copy of the genetic information stored in a DNA strand... Read More

Arthropod

Arthropod Definition What is an arthropod? An arthropod is an invertebrate living organism characterized by the presence of... Read More

Chromosomal mutation

Every living thing is made up of DNA. Our DNA is what makes us unique and different in the world. Our DNA is made up of... Read More

Segmentation

Definition noun, plural: segmentation (1) (embryology) Cleavage, i.e. the repeated division of a fertilized ovum forming... Read More

Metamerism

Metamerism Definition Metamerism is the repetition of homologous body segments. This type of development can be seen in the... Read More

Pedipalp

Definition noun, plural: pedipalps Either of the second pair of appendages located laterally to the chelicerae and... Read More

Transposon

Definition noun, plural: transposons A small segment of DNA that is capable of replicating and inserting copies of DNA at... Read More

Pericentric inversion

Definition noun, plural: pericentric inversions (genetics) An inversion of a segment of chromosome in which the centromere... Read More

Paracentric inversion

Definition noun, plural: paracentric inversions (genetics) An inversion of a segment of chromosome in which the centromere... Read More

Promoter gene

Definition noun, plural: promoter genes (genetics) A site in a DNA molecule at which RNA polymerase and transcription... Read More

Chromosomal inversion

Definition noun, plural: chromosomal inversions A chromosomal aberration wherein a segment of a chromosome is reversed... Read More

Transgene

Definition noun, plural: transgenes A segment of DNA from one organism introduced into the genome of another organism (from... Read More

Transposition

Definition noun, plural: transpositions (genetics) The transfer of a segment of DNA from one site to another of a... Read More

Abdomen

Definition noun (1) The region of the body in between the thorax and the pelvis (2) The part of the body where stomach,... Read More

Promoter

Definition noun, plural: promoters (chemistry) A substance that is capable of increasing the activity of a catalyst to... Read More

Pedicel

Definition noun, plural: pedicels (1) (botany) The stalk of a flower. (2) (entomology) The waist of the ant bearing one or... Read More

Varus

Definition adjective Of, pertaining to, or relating to a deformity wherein the distal segment of a bone or a joint... Read More

Isopod

Definition noun, plural: isopods Any of the members of the order Isopoda, which is a taxonomic group characterized mainly by... Read More

Pair-rule gene

Definition noun A segmentation gene whose expression subdivides the embryo into a series of stripes, and sets the boundaries... Read More

Spermiogenesis

Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... Read More

Gene

A gene is the fundamental, physical, and functional unit of heredity. The genes make up the sequences of DNA (genotypes).... Read More

Petiole

Definition noun, plural: petioles (1) (botany) The stalk at the base of the leaf blade, attaching and supporting the leaf... Read More

Valgus

Definition adjective Of, or pertaining to the abnormal outward turning of a distal segment of a bone from the mid-line,... Read More

Armadillidiidae

Definition noun A taxonomic family comprised of terrestrial woodlouse species that are identifiable chiefly by their... Read More

Messenger ribonucleic acid

Definition noun plural: messenger ribonucleic acids mes•sen•ger ri•bo•nu•cle•ic ac•id, ˈmɛ.sɪn.dʒəɹ... Read More

Translation

Translation, in general, is the conversion of something into another form, such as a word from one language to another. But... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Microscopic section

microscopic section --> section 1. The act of cutting, or separation by cutting; as, the section of bodies. 2. A part... Read More

Fushi tarazu

Definition noun (1) A pair-rule gene which, together with even-skipped, plays a crucial role in the activation of the... Read More

Ribonucleic acid

Ribonucleic Acid Definition noun (uncountable), ribonucleic acids ri·bo·nu·cle·ic ac·id, raɪboʊnjuːkliːɪk... Read More

Muscle plate

muscle plate --> myotome (Science: anatomy) A muscular segment; one of the zones into which the muscles of the trunk,... Read More

Smooth endoplasmic reticulum

Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More

Manubrium

Manubrium Origin: L, handle, fr. Manus hand. 1. (Science: anatomy) a handlelike process or part; especially, the anterior... Read More

Dactylus

Definition noun, plural: dactyla (zooanatomy) A dactyl, i.e. a digit (a finger or a toe) Supplement The term dactylus refers... Read More

Nervous System

    THE is the most complicated and highly organized of the various systems which make up the human body. It is the... Read More

Book lungs

Book Lungs Definition Lungs are known as the organs that help organisms breathe. When we think of lungs, we think of the... Read More