Biology for IGCSE & O level - Inheritance (Section 1 - No. 1)
What is the key difference between autosomal and sex-linked traits?
Autosomal traits are always dominant; sex-linked traits are always recessive.
Autosomal traits are located on sex chromosomes; sex-linked traits are located on autosomes.
Autosomal traits are located on autosomes; sex-linked traits are located on sex chromosomes.
Sex-linked traits are always expressed in males, whereas autosomal traits are always expressed in females.
Giải thích
Autosomal traits are encoded by genes on non-sex chromosomes, while sex-linked traits are encoded by genes on sex chromosomes (X or Y).