HLA-B27
AS is seen most commonly in males 30 years old and older
It is most commonly seen in males between 16 and 35.
Degenerative disorders that affect the neck and spine. These include osteoarthritis, ankylosing spondylitis (an inflammatory disorder of the spine most often seen in young men), and osteoporosis.
An allele is the opposite form of a gene. In some cases it can result in some differences such as pigmentation or eye color but usually the differences can't be seen.
In regards to marginal vs. non-marginal syndesmophytes. Marginal syndesmophytes (intervertebral bony bony bridges) are more commonly seen in ankylosing spondylitis. Where as non-marginal syndesmophytes are more commonly in reactive arthritis and DISH. Marginal syndesmophytes are delicate + symmetric; while non-marginal syndesmophytes are bulky + discontinuous.
The blue gene is a different gene then the blue merle gene. In all my years of breeding Cockers I have never seen a true BLUE Cocker Spaniel, but have seen many BLUE MERLES.
It is called the phenotype or phenotypic trait.
A genotype is an organism's combination of genes that forms a trait.
Recessive gene is one which is supressed and do not show their characteristics and dominant gene is one which show their characteristics for example if a father has brown hair and mother has black hairs and if their son has black hair then in this case gene which has characteristics of black is dominant and the other which has characteristics of brown colour is recessive
you want to know which gene thow visible one shall be seen.
Heterozygous dominant. Could also be called a masked trait.
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