Law of Segregation
Law of Segregation
The Law of Segregation (pronunciation: /lɔː ɒv sɛɡrɪˈɡeɪʃ(ə)n/) is a fundamental principle in genetics that was first stated by Gregor Mendel in 1865.
Etymology
The term "segregation" comes from the Latin word 'segregare', which means 'to separate'. The law is named after its discoverer, Gregor Mendel, a 19th-century Austrian monk who is often referred to as the "father of modern genetics".
Definition
The Law of Segregation states that during the formation of gametes (eggs or sperm), the two copies of each hereditary trait separate so that offspring receive one factor from each parent. This is also known as Mendel's First Law.
Related Terms
- Allele: One of two or more versions of a gene that are found at the same place on a chromosome.
- Genotype: The genetic makeup of an organism; the set of genes in our DNA which is responsible for a particular trait.
- Phenotype: The physical properties of an organism including appearance, development, and behavior.
- Homozygous: Having two identical alleles for a particular gene.
- Heterozygous: Having two different alleles for a particular gene.
- Dominant allele: An allele that is fully expressed in the phenotype of a heterozygote.
- Recessive allele: An allele that is masked when a dominant allele is present.
See Also
External links
- Medical encyclopedia article on Law of Segregation
- Wikipedia's article - Law of Segregation
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