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Transcript
Section 1: Chromosome and ï´ Expression of Sex-Linked Genes Phenotype ï´ Pattern of expression is different in sex chromosomes than in autosomes. ï´ Males only have one allele due to only having one X, while females have two. ï´ Male express all alleles on the X. ï´ Female mammals go through a process called X chromosome inactivation. ï´ One X is randomly âturned offâ ï´ Due to this females are a mixture of two types of cells; one showing mom allele, one showing dad allele. ï´ Female calico cats.
