a series of three or more alternative or allelic forms of a gene, only two of which can exist in any normal, diploid individual.
A gene located on a sex chromosome, usually the X-chromosome.
someone who carries a trait but does not have it themselves
an ancestral line; line of descent; lineage; ancestry
A disease or condition caused by an absent or defective gene or by a chromosomal aberration
surgical puncture to remove fluid from the amnion
A picture of all the chromosomes in a cell arranged in pairs
The process of selecting a few organisms with desired traits to serve as parents of the next generation
the act of mating closely related individuals
(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
a group of genetically identical cells or organisms derived from a single cell or individual by some kind of asexual reproduction
process of making changes in the DNA code of living organisms
The insertion of working copies of a gene into the cells of a person with a genetic disorder in an attempt to correct the disorder
the complete genetic material contained in an individual
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