FACTOID # 14: North Carolina has a larger Native American population than North Dakota, South Dakota and Montana combined.
 
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Encyclopedia > Y linkage

In mammals, Y-linkage refers to when a phenotypic trait is determined by an allele (or gene) on the Y chromosome. The human Y chromosome is one of two sex chromosomes, it contains the genes that cause testis development, thus determining maleness. ...


The Y-chromosome is small and does not contain many genes, therefore few traits are Y-linked, and so Y-linked diseases are rare. As only males have a Y chromosome, the genes are simply passed from father to son, with no interchromosomal genetic recombination. Genetic recombination is the transmission-genetic process by which the combinations of alleles observed at different loci (plural of locus) in two parental individuals become shuffled in offspring individuals. ...

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Genetic linkage occurs when particular alleles are inherited together. ... Sex linkage is the phenotypic expression of an allele that is dependent on the sex of the individual and is directly tied to the sex chromosomes. ... Sex linkage is the phenotypic expression of an allele that is dependent on the sex of the individual and is directly tied to the sex chromosomes. ...

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  Results from FactBites:
 
Linkage - general glossary (12580 words)
The linkage between genus and species is a one-many linkage: one genus has linkages with many species (two or more.) There's a linkage between this linkage and the one-many functions or mapping of established Mathematics, which link a single member of the domain with more than one member of the range of a set-valued function.
Linkage with the z-layer is shown by the z-partition of a partitioned Linkage Schema.
Linkages which are encountered often in human personality and in societies, used of characteristics which may well be 'found together' and seem to 'go together.' For example, a person who has a very good sense of humour may lack the tragic sense of life, or at least the capacity for empathy.
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