Abortion: expulsion of the embryo or fetus from the uterus.
Anaeuploidy: having one extra or less chromosome in relation with the parental chromosome.
Autosome: chromosome of a type that is the same in males and females.
Crossing Over: interaction in which non-sister chromatids of a pair of honologous chromosomes interact and exchange segments.
Deletion: loss of a center of a segment form a chromosome.
Disease: infection when defenses aren´t strong enough.
Doble-blind study: different investigators indeppendently collect, then compare data.
Duplication: gene sequences repeated several times.
Gene Abnormality: rare version of heritable traits.
Genetic disorder: inherited condition that causes medical problems.
Genetic Recombination: result of any process that puts new genetic information into a DNA molecule.
Homologous Chromosomes: identical pair of chromosomes that interacts at meiosis.
In- vitro fertilization: conception outside the body.
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