biologist

Venter

...>>> 1946 - Craig Venter , American biologist 1946 - Demond Wilson, actor ("Sanford and Son") 1952 - Harry Anderson, actor ("Night Court") 1958 - Thomas Dolby, rock musician 1969 - David Strickland, American actor (d. 1999) ... Full article >>>...

Vector

...gned artificial DNA construct used by molecular biologist s to amplify selected pieces of DNA insert ed into the construct; examples include plasmid , phage , phagemid , cosmid , fosmid, ... Full article >>> To increase the number of copies of a DNA sequence , in vivo by insert ing i...

Variety

...;> A variety of techniques that molecular biologist s use to manipulate DNA molecule s to study the expression of a gene . explained: Listen to a detailed explanation. Full article >>> A variety of monomeric and dimer ic intercalating dyes have been used to improve the sensitiv...

Theory

...ndosymbiotic theory , now generally accepted by biologist s, concerns the origin s of mitochondria and plastid s (e.g. chloroplasts ), which are organelles of eukaryotic cells . Full article >>> Well evolution is a theory . It is also a fact. And facts and theories are different th...

Sutures

...62;>> Alexis Carrel (1873-1944), French biologist and surgeon, winner of the 1912 Nobel Prize in Physiology or Medicine for his work on sutures and organ trans plants, advocate of eugenics Elie-Abel Carrière (1818-1896), French botanist ... Full article >>> In each case the...

Survival of the fittest

...arwin had called natural selection . The British biologist J.B.S. Full article >>> Those variants best adapted to the conditions of their life are most likely to survive and reproduce themselves (" survival of the fittest "). To the extent that their adaptation s are inheritable, they will ...

Sense strand

...m RNA . Full article >>> Molecular biologist s call a sequence " sense " if it is trans lated or trans latable, and they call its complement " antisense ". It follows then, somewhat paradoxically, that the template for transcription is the anti sense strand . Full article >>...

Selection

...clear force is. However, for the sake of brevity, biologist s sometimes refer to it that way. This often leads to some confusion when biologist s speak of selection "pressures. Full article >>> selection pressure The tendency...

RNAi

...adds a promising tool to the toolbox of molecular biologist s. Introducing ds RNA corresponding to a particular gene will knock out the cell 's own expression of that gene . (Feeding C. elegans on E. Full article >>> RNAi : ' RNA interference ' (a.k.a. ' RNA silencing') is the mechanis...

Ribosomes

...George Emil Palade (born 1912), Romanian-American biologist , discoverer of ribosomes , Nobel Prize Peter Simon Pallas (1741-1811), Russian zoologist Edward Palmer (1829-1911), British botanist Josif Pancic (1814-1888), Serbian botanist ... Full article >>> The amino acid sequence of p...

Phagemid

...gned artificial DNA construct used by molecular biologist s to amplify selected pieces of DNA insert ed into the construct; examples include plasmid , phage , phagemid , cosmid , fosmid, ... Full article >>>...

Order

...#62; In order to grapple with this diversity, biologist s attempt to class ify all living things. This scientific class ification should reflect the evolutionary tree s ( phylogenetic tree s) of the different organ isms. Full article >>> In order to accomplish this, however, I had to ...

Ontogeny

...hylogeny " was proposed over a century ago by the biologist Ernst Haeckel. He also made the drawings on which the drawings above are based. Full article >>> Molecular vestiges Ontogeny and developmental biology Mammalian ear bones, reptilian jaws Pharyngeal pouches, branchial arches Sna...

Morphology

...ories. In order to grapple with this diversity, biologist s attempt to class ify all living things. Full article >>> For tissue culture cells , cells trans fected with foreign DNA are trans formed if their exhibit morphology changes such as rounded cell bodies, loss of contact...

Mendel

...ected. Though they were not completely unknown to biologist s of the time, they were not seen as being important. Full article >>> Mendel 's Hypothesis To explain his results, Mendel formulated a hypothesis that included the following: In the organ ism there is a pair of factors that c...

Mating

...g Mating Calls Launch Case Study Evolution ary biologist s have developed many techniques to analyze how male and female mating preferences have co-evolved. Full article >>> Horizontal lines connecting a male and female represent mating . Vertical lines extending downward from a couple re...

Ligase

...s; used by cells for DNA repair , by molecular biologist s for gene cloning . Full article >>> Sealed with DNA ligase , these molecule s are functioning plasmid s that are capable of conferring resistance to both ampicillin and kanamycin. They are molecule s of recombinant DNA . Ful...

In silico

...between experimental scientists and computational biologist s by focusing on biologically significant computational methods and results. A print version is also available. Full article >>> Werner, E. In silico multicellular systems biology and minimal genome s, Drug Discov Today. 2003 Dec 15...

Hereditary Unit

... discovered to be hereditary unit s 1905 British biologist William Bateson coins the term " genetics " in a letter to ... Full article >>> Evolution is a change in the gene pool of a population over time. A gene is a hereditary unit that can be passed on unaltered for many generatio...

Hereditary

...t DNA is the hereditary material, but not all biologist s were convinced. More Evidence: The Genetic Material is DNA - Alfred D. Hershey and Martha Chase, 1952 ... Full article >>> Gene : A biochemical unit of hereditary , often coding for an entire protein . Generalist: A pest or ...

Genetic map

... discovered to be hereditary unit s 1905 British biologist William Bateson coins the term " genetics " in a letter to Adam Sedgwick 1910 Thomas Hunt M organ shows that genes reside on chromosomes 1913 Alfred Sturtevant makes the first genetic map of a ... Full article >>> (See Continuous...

Gene splicing

...g interviews with leading environment alists and biologist s. Secondary, college. [Hawkhill Associates (800/422-4295 or 608/251-3934, hawkhill@home.com)] ... Full article >>> In the same year, Richard Roberts and Phillip Sharp independently showed that the genes of adeno virus contain intron...

Fossil

...This definition is the working definition used by biologist s that cannot, or should not, use the “Biological Species Concept" ... Full article >>> It also generally includes paleontologists who use fossil s to answer questions about the mode and tempo of evolution , as well as theoret...

Fetus

...e author Aldous Huxley, and was the basis for the biologist Shearwater in Huxley's novel Antic Hay. Ideas from Haldane's Daedalus, such as ectogenesis (the development of fetus es in artificial wombs), ... Full article >>>...

Evolution

... Theory [Last Update: January 22, 1993] hen non- biologist s talk about biological evolution they often confuse two different aspects of the definition. Full article >>> Evolution ary developmental biology (often referred to as 'evo-devo' or evolution of development) is a field of biol...

Epitope

...ded mainly for clinical geneticists and molecular biologist s. Full article >>> Each B- lymph ocyte produces antibodies that are specific not to an antigen , but to an epitope of that antigen . An epitope is a small piece of the antigen to which the antibody binds. Full article ...

Endosymbiotic theory

... endosymbiotic theory , now generally accepted by biologist s, concerns the origin s of mitochondria and plastid s (e.g. chloroplasts ), which are organelles of eukaryotic cells . Full article >>> Endosymbiotic theory The endosymbiotic theory concerns the origin s of mitochondria ...

Domain

...erally accepted until later. Now, the majority of biologist s accept the domain system, but a large minority use the five- kingdom method. Full article >>> Domain A discrete portion of a protein (and corresponding segment of gene ) with its own function. The combination of domain s i...

DNA repair

...s; used by cells for DNA repair , by molecular biologist s for gene cloning . Full article >>> The closer together the marker s are, the lower the probability that they will be separated during DNA repair or replication processes ( binary fission in prokaryotes , mitosis or meio...

DNA ligase

...s; used by cells for DNA repair , by molecular biologist s for gene cloning . Full article >>> DNA ligase : Enzymatic activity responsible for creating phosphodiester bond s between the 5' end of one strand of DNA and the 3' end of another strand . Requires the presence of a 5' phosp...

DNA

... used by cells for DNA repair , by molecular biologist s for gene cloning . Full article >>> DNA sequence d from 17-20 MY old magnolia In the paper I explain here, the authors (Golenberg et. al., 1990) sequence d an 820 bp region (the rbcL gene ) from the chloroplast DNA of a com...

Cosmid

...gned artificial DNA construct used by molecular biologist s to amplify selected pieces of DNA insert ed into the construct; examples include plasmid , phage , phagemid , cosmid , fosmid, ... Full article >>> on sociobiology 's contention that genes play a decisive role in human beha...

Convergence

... in nature (where it is called genetic drift by biologist s). Full article >>> morphological convergence The evolution of basically dissimilar structures to serve a common function. For example: the wings of birds and insects. morula The solid-ball stage of the pre-emplantation embryo ...

Computational biology

...The computational biology tool best-known among biologist s is probably BLAST, an algorithm for searching la...The computational biology tool best-known among biologist s is probably BLAST, an algorithm for searching large data bases of protein or DNA sequence s. ...

Community

...#62;>> The whole community of plant biologist s chose Arabidopsis [to be a model organ ism] because it has a very rapid generation time. It has a very small genome as far as plant s go. Full article >>> The medical community now carefully distinguishes between physical dep...

Cloning vector

...gned artificial DNA construct used by molecular biologist s to amplify selected pieces of DNA insert ed into the construct; examples include plasmid , phage , phagemid , cosmid , fosmid, ... Full article >>> cloning vector An agent used to trans fer DNA in genetic engineering , s...

Cloning

...gned artificial DNA construct used by molecular biologist s to amplify selected pieces of DNA insert ed into the construct; examples include plasmid , phage , phagemid , cosmid , fosmid, ... Full article >>> cloning vector An agent used to trans fer DNA in genetic engineering ,...

Biome

...ype. Full article >>> One group of biologist s, called biome tricians, thought Mendel 's laws only held for a few trait s. Most trait s, they claimed, were governed by blending inheritance . Mendel studied discrete trait s. Full article >>>      A collecti...

Biologist

Biologist A biologist is a scientist devoted to and producing results i...logy through the study of organ isms. Typically biologist s study organ isms and their relationship to their environment . Full article >>> G...

Bacteria

...s quickly adopted by most molecular systematists, biologist s like Luria and Mayr have criticized him for over-emphasizing the uniqueness of the archae bacteria and ignoring strong genetic similarities between the ... Full article >>> All plant s, algae , and cyano bacteria which photos...

Archaebacteria

...s quickly adopted by most molecular systematists, biologist s like Luria and Mayr have criticized him for over-emphasizing the uniqueness of the archaebacteria and ignoring strong genetic similarities between the ... Full article >>> In 1977, Woese divided the prokaryotes into two groups ba...

Antisense strand

...nation. Full article >>> Molecular biologist s call a sequence " sense " if it is trans lated or trans latable, and they call its complement " antisense ". It follows then, somewhat paradoxically, that the template for transcription is the antisense strand . Full article >>&...