An individual with the normal phenotpe.
Sex Linked Genes
A gene located on the sex chromosome.
A genetic map based on the frequencies of recombination between markers during crossing over of homologous chromosomes.
A human genetic disease caused by a sex-linked recessive allele, charaterized by excessive bleeding following injury.
Duchenne Muscular Dystrophy
A human genetic disease caused by a sex-linked recessive allele; characterized by progressive weakening and a loss of muscle tissue.
A dense object lying along the inside of the nuclear envelope in female mammalian cells, representing an inactivated X chromosome.
An accident of meiosis or mitosis, in which the members of a pair of homologous chromosomes or sister chromatids fail to move a part properly.
A chromosomal aberration in which certain chromosomes are present in extra copies or are deficient in number.
The parental effect on gene expression whereby identical alleles have different effects on offspring, depending on whether they arrive in the zygote via the ovum or via the sperm.