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an organism that does not cause disease itself but spreads infection by conveying pathogens from one host to another

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a technique using echoes of ultrasound pulses to delineate objects or areas of density in the body

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a laboratory apparatus most commonly used to amplify segments of DNA via the polymerase chain reaction (PCR)

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thermostable DNA polymerase that copies DNA

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denoting the liquid lying above a solid residue after crystallization, precipitation, centrifugation, or other process

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a variation in a single base pair in a DNA sequence

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natural selection arising through preference by one sex for certain characteristics in individuals of the other sex

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an enzyme produced chiefly by certain bacteria, having the property of cleaving DNA molecules at or near a specific sequence of bases

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a strand of short nucleic acid sequences that serves as a starting point for DNA synthesis

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screening test used to determine if genetic or chromosomal disorders are present in embryos produced through in vitro fertilization

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technique used to amplify a single copy or a few copies of a piece of DNA across several orders to generate thousands to millions of copies of a particular DNA sequence

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set of observable characteristics of an individual resulting from the interaction of its genotype with the environment

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screening in infants shortly after birth for a list of conditions that are treatable but not clinically evident in the newborn period

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the number and visual appearance of the chromosomes in the cell nuclei

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mature eggs are collected from the ovaries and fertilized by sperm in a lab

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the genetic constitution of an individual organism

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the complete set of genes or genetic material present in a cell or organism

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the sequencing of human DNA in order to discover genetic differences, anomalies, or mutations that may prove pathological

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the giving of advice to prospective parents concerning the chances of genetic disorders in a future child

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the transplantation of normal genes into cells in place of missing or defective ones in order to correct genetic disorders

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a unit of heredity that is transferred from parent to offspring and is held to determine some characteristic of the offspring

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destroy the characteristic properties of a protein by heat, acidity, or other effects that disrupt its molecular conformation

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to replicate a fragment of DNA

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a test made early pregnancy to detect congenital abnormality in the fetus

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testing that is done to see whether a specific gene mutation is carried by the individual

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recombine DNA in the double stranded form following separation by heat

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A sample of amniotic fluid taken from the uterus with a hollow needle to screen for developmental abnormalities in a fetus