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An allele [1] (or allelomorph) is a variant of the sequence of nucleotides at a particular location, or locus, on a DNA molecule. [2]Alleles can differ at a single position through single nucleotide polymorphisms (SNP), [3] but they can also have insertions and deletions of up to several thousand base pairs.
The Y chromosome of the father cannot oppose this. The healthy allele on the X chromosome of the father can compensate for this in a daughter. She can see normally, but she becomes a conductor. The same pattern of inheritance applies to Haemophilia. Gonosomal recessive genes are also passed on by carriers.
A high-ranking male mandrill advertises his status with bright facial coloration. [1]In the zoological field of ethology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social groups interact, creating a ranking system.