173 results found

Search Results for: genome

Genome

Definition noun, plural: genomes (1) The complete set of genetic material in an organism (2) The total genetic content in... Read More

Poison + water = hydrogen. New microbial genome shows how

Poison + water = hydrogen. New microbial genome shows how Take a pot of scalding water, remove all the oxygen, mix in a bit... Read More

Parthenogenesis

To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More

Repeated sequences

Definition noun (molecular biology) Multiple copies of nucleotide sequences in the nucleic acids (i.e. DNA or RNA)... 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

Virus

Definition noun, plural: viruses A submicroscopic infectious agent that is unable to grow or reproduce outside a host... Read More

Retrotransposon

Definition noun, plural: retrotransposons A transposon that is amplified via reverse transcription, i.e. the DNA element is... Read More

Proteome

Definition noun, plural: proteomes The complete set of proteins in an organism over its entire life cycle, or at a given... 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

Repetitive DNA

Definition noun (molecular biology) Repetitive nucleotide sequences in the DNA throughout the genome Supplement The... 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

Plant

Plant Definition (botany) Any of the eukaryotic organisms of the biological kingdom Plantae, characterized by being... Read More

Genome shuffling

Recombination of whole genomes. One example is protoplasm... Read More

Interspersed repeat

Definition noun, plural: interspersed repeats A type of repeated sequence in which the copies are dispersed throughout the... 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

Genotype

Genotype and Phenotype The contrasting terms genotype and phenotype are used to define the characteristics or traits of an... Read More

Transgenic

Definition adjective Of, pertaining to, or relating to an organism that has genes from another organism put into its genome... Read More

Haploid

In biology, haploid pertains to a condition, a cell, or an organism that has half of the usual complete set of chromosomes... Read More

Polyploid

Definition noun, plural: polyploids A cell or an organism having a genome with multiple (more than two) sets of homologous... Read More

Rabies pathobiology and its RNA virus agent – Lyssavirus

Having a dog as a pet presents a myriad of benefits. One of them is having a companion reputed for being charismatic and... Read More

Binary fission

Binary fission definition What is binary fission? In biology, binary fission is a type of asexual reproduction where a... Read More

Zygotic-effect gene

Definition noun, plural: zygotic-effect genes (1) Any of the genes expressed in the early embryo. (2) Any of the genes... Read More

The Evolutionary Development of Multicellular Organisms

The beginning of the Cambrian era saw a widespread arrival of multi-cellular organisms, particularly in the form of sponges.... Read More

Heredity

Reviewed by: Mary Anne Clark, PhD Heredity Definition In biology, heredity refers to the passing of genetic... 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

Law of Segregation

Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that were initially... Read More

Apomixis

Apomixis Definition Just like any other organism, the process of reproduction is pivotal to the life cycle of plants. There... Read More

Genetic diversity

Genetic Diversity Definition Each species is composed of individuals with their own set of genes. A gene is the inheritance... Read More

SsRNA-RT virus

Definition noun, plural: ssRNA-RT viruses Single-stranded RNA virus with a positive sense, single stranded RNA genome but... Read More

Sequence tagged sites

sequence-tagged site (Science: molecular biology) short tagged tracts of dNA sequence (200 to 500 base pairs) that is... Read More

Nucleic acid

Definition noun plural: nucleic acid nu·cle·ic ac·id, nuˈkleɪ.ɪk ˈæsɪd Any of the group of complex compounds... Read More

Dihaploid

Definition noun A haploid cell having two copies of the set of chromosomes adjective Of or pertaining to a cell or organism... Read More

Ploidy

Definition noun, plural: ploidies The number of sets of homologous chromosomes that make up the genome of a cell or an... Read More

Polymorphism

Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More

SELFISH GENE – selfish to persist

What is a selfish gene? A selfish gene is not a gene that makes an individual selfish. In fact, it may even be involved in... Read More

Mitochondrial DNA – hallmark of psychological stress

We often hear that stress can be unsettling as it could make us ill when it becomes chronic and overwhelming. However, is... Read More

Genetic material

Genetic Material Definition What is genetic material? Genetic material is the hereditary substance in the cell. It carries... Read More

Plasma membrane

Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More

Hfr bacterium

Definition noun, plural: Hfr bacteria A bacterium that possesses the F factor integrated into the bacterial genome, hence,... Read More

Pyruvate

Pyruvate Definition Pyruvates have been often recognized as one of the most important molecules that are frequently... Read More