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In genetics, a maternal effect occurs when the phenotype of an organism is determined by the genotype of its mother. [1] For example, if a mutation is maternal effect recessive, then a female homozygous for the mutation may appear phenotypically normal, however her offspring will show the mutant phenotype, even if they are heterozygous for the mutation.
In Serer culture, inheritance is both matrilineal and patrilineal. [36] It all depends on the asset being inherited – i.e. whether the asset is a paternal asset – requiring paternal inheritance (kucarla [36]) or a maternal asset – requiring maternal inheritance (den yaay [34] or ƭeen yaay [36]).
Paternal inheritance of a deletion of this region is associated with Prader-Willi syndrome (characterised by hypotonia, obesity, and hypogonadism). Maternal inheritance of the same deletion is associated with Angelman syndrome (characterised by epilepsy, tremors, and a perpetually smiling facial expression).
Uniparental inheritance is a non-Mendelian form of inheritance that consists of the transmission of genotypes from one parental type to all progeny. That is, all the genes in offspring will originate from only the mother or only the father.
Primogeniture (/ ˌ p r aɪ m ə ˈ dʒ ɛ n ɪ tʃ ər,-oʊ-/) is the right, by law or custom, of the firstborn legitimate child to inherit the parent's entire or main estate in preference to shared inheritance among all or some children, any illegitimate child or any collateral relative.
“This maternal inheritance pattern has been observed in mitochondrial disorders, so we speculate whether mitochondrial inheritance may play a role in Alzheimer’s disease,“ the researcher ...
Uniparental inheritance occurs in extranuclear genes when only one parent contributes organellar DNA to the offspring. A classic example of uniparental gene transmission is the maternal inheritance of human mitochondria. The mother's mitochondria are transmitted to the offspring at fertilization via the egg. The father's mitochondrial genes are ...
Extranuclear inheritance (also known as cytoplasmic inheritance) is a form of non-Mendelian inheritance also first discovered by Carl Correns in 1908. [9] While working with Mirabilis jalapa , Correns observed that leaf colour was dependent only on the genotype of the maternal parent.