214 results found

Search Results for: expression system

Expression system

Expression system (Science: molecular biology) combination of an expression vector, its cloned dna, and the host for the... Read More

Polygenic inheritance

Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many... Read More

Expression vector

Definition noun, plural: expression vectors A plasmid containing the required regulatory sequences specifically used for the... Read More

Multiple alleles

Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles... Read More

Incomplete dominance

Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... 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

Nucleus

In cell biology, the nucleus is the large, membrane-bounded organelle that contains the genetic material in the form of... Read More

Codon

What does codon mean? A codon, in biology, is the basic genetic unit of life that acts as the template for the amino acid... Read More

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

Transactivation

Definition noun, plural: transactivations (molecular biology, genetics) The stimulation of transcription by expressing an... Read More

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Phenotype

Phenotype refers to the observable characteristics of an organism as a multifactorial consequence of genetic traits and... Read More

Constitutive expression

Definition noun Expression of a gene that is transcribed at a constant level. Supplement For example, the expression of... Read More

Cell differentiation

Cells are often described as the building blocks of life as they are the smallest unit used to build up organisms. Cells can... 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

Imprinting

What does imprinting mean? Have you watched the TV cartoon show “Tom and Jerry” with an episode of a duck and its... 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

Genotype

Genotype Definition Genotype is the genetic makeup of an individual cell or organism that determines or contributes to its... 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

Nucleosome

Nucleosome Definition Every organism is made of deoxyribonucleic acid, also known as DNA. DNA is made up of numerous... Read More

Polygene

Definition noun, plural: polygenes A group of genes that produces a specific phenotype or trait only when expressed... Read More

Even-skipped

Definition noun (1) One of the pair-rule genes (together with hairy and runt) directly activated by gap gene products... Read More

Autocrine signaling

Autocrine Signaling Definition What is autocrine signaling? Autocrine signaling is a type of cell signaling wherein a cell... Read More

Enhancer element

Enhancer element (Science: molecular biology) a dna sequence, present in the genomes of higher eukaryotes and of various... Read More

Glucocorticoid

Definition noun, plural: glucocorticoids Any of a group of corticosteroids involved in carbohydrate metabolism (e.g.... Read More

Muscles of the Apes – a thwack on human muscle evolution

Summary: A recent finding suggests that apes do have the muscles for bipedalism, vocal communication, and facial... 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

Face

Face 1. The exterior form or appearance of anything; that part which presents itself to the view; especially, the front or... Read More

Phenotypic ratio

Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... Read More

Polygenic trait

Polygenic Trait Definition Polygenic trait refers to a trait that is controlled by multiple non-allelic genes. These genes... 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

Epistasis

Definition noun, plural: epistases (genetics) The interaction between nonallelic genes at two or more loci resulting in one... Read More

Expression library

Expression library (Science: molecular biology) a library of dna fragments which was created with an expression vector so... Read More

Biotic potential

When we look at the different forms of life, we often wonder how they have continued to exist one generation after another.... 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

Silent mutation

A mutation is a change in the nucleotide sequence of a gene or a chromosome. When there is only one nucleotide involved, it... Read More

Additive genes

Definition noun Genes that code for the same function or trait and their effects work together on the... Read More

Oligonucleotide

Definition noun plural: mononucleotides ol·i·go·nu·cle·o·tide, ŏl′ĭ-gō-no͞o′klē-ə-tīd A short polymer... Read More

Cell adhesion

Cell Adhesion Definition Cell adhesion is the process in which a cell uses a specialized complex of proteins to get... 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