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3 days ago · Definition. A genotype is a scoring of the type of variant present at a given location (i.e., a locus) in the genome. It can be represented by symbols. For example, BB, Bb, bb could be used to represent a given variant in a gene. Genotypes can also be represented by the actual DNA sequence at a specific location, such as CC, CT, TT.
- Allele
Definition An allele is one of two or more versions of DNA...
- Heterozygous
Definition Heterozygous, as related to genetics, refers to...
- Allele
4 days ago · Recent News. single nucleotide polymorphism (SNP), variation in a genetic sequence that affects only one of the basic building blocks— adenine (A), guanine (G), thymine (T), or cytosine (C)—in a segment of a DNA molecule and that occurs in more than 1 percent of a population. An example of an SNP is the substitution of a C for a G in the ...
- The Editors of Encyclopaedia Britannica
4 days ago · Locus. Locus is a term that we use to tell us where on a chromosome a specific gene is. So it's really the physical location of a gene on a chromosome. It's a way of defining the gene's neighborhood. If you consider the entire chromosome as a country where the gene is found, and then a region of the chromosome would be the city.
5 days ago · taxonomy, in a broad sense the science of classification, but more strictly the classification of living and extinct organisms—i.e., biological classification. The term is derived from the Greek taxis (“arrangement”) and nomos (“law”). Taxonomy is, therefore, the methodology and principles of systematic botany and zoology and sets up ...
5 days ago · Definition. 00:00. …. Chromatin refers to a mixture of DNA and proteins that form the chromosomes found in the cells of humans and other higher organisms. Many of the proteins — namely, histones — package the massive amount of DNA in a genome into a highly compact form that can fit in the cell nucleus.
3 days ago · v. t. e. An image of the 46 chromosomes making up the diploid genome of a human male (the mitochondrial chromosomes are not shown). In the fields of molecular biology and genetics, a genome is all the genetic information of an organism. [1] It consists of nucleotide sequences of DNA (or RNA in RNA viruses ).
5 days ago · Genetics forms one of the central pillars of biology and overlaps with many other areas, such as agriculture, medicine, and biotechnology. Since the dawn of civilization, humankind has recognized the influence of heredity and applied its principles to the improvement of cultivated crops and domestic animals. A Babylonian tablet more than 6,000 ...
