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Marfan syndrome is not sex linked. It is autosomal dominant and found equally in all genders and ethnicities.
DiGeorge syndrome is not caused by a single gene mutation, but rather by a deletion of a portion of chromosome 22. It is not inherited in a simple Mendelian pattern like dominant autosomal or sex-linked traits.
Autosomal
Polydactyly is typically autosomal, meaning it is not linked to the sex chromosomes. However, in some rare cases, polydactyly can be part of a sex-linked genetic disorder.
autosomal.
Autosomal dominant
Apert syndrome is a autosomal dominant genetic disorder, meaning that only one copy of the mutated gene from either parent is necessary to inherit the condition. It is not sex-linked.
No, a gene is either autosomal or sex-linked, but never both.
Klinefelter Syndrome is sex-linked, because it is a genetic defect that results in a male having an extra X chromosome.
Sex-linked and Recessive
It is ex linked.
Down Syndrome is a trisomy of the 21st chromosome as opposed to an allelic inheritance through the X chromosome. Trisomy is a somatic disorder caused by improper division during gametogenesis (usually of the ovum) that results in 3 copies of the 21st chromosome in the egg once it is fertilized.