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Genetics

Almost all answers are key terms from chapter 3...a few additions.  Note that answers DO NOT include spaces (some words are compounded).
Horizontales
A statistic that indicates what percentage of the variation in a particular trait can be traced to genes.
A person whose genotype includes a gene that is not expressed in the phenotype.
A trait that is affected by many factors, both genetic and environmental.
A variation that makes a gene different in some way from other genes for the same characteristics.
The full set of genes that are the instructions to make an individual member of a certain species.
Referring to two genes of one pair that are exactly the same in every letter of their code.
Abbreviation for the techniques designed to help infertile couples conceive and then sustain a pregnancy.
An organism's entire genetic inheritance, or genetic potential
The chemical composition of the molecules that contain the genes.
A distinguishing characteristic or quality, especially of one's personal nature.
One of the 46 molecules of DNA that virtually every cell of the human body contains.
An allele of a gene that is always more influential and controls the expression of a characteristic.
A sperm or ovum that can produce a new individual if it combines with a gamete from the other sex to make a zygote.
Twins who originated from one zygote that splits apart very early in development.
The study of how environmental factors affect genes and genetic expression.
Because of this type of gene, some recessive characteristics are expressed more often in males than in females.
Verticales
Consultation and testing designed to help individuals learn about their genetic heritage, including any harmful conditions they may pass along.
An inherited intellectual disability in which part of the X chromosome seems to be attached by a very thin string of molecules.
An in vitro technique in which a single sperm cell is injected directly into an ovum.
An allele that is not expressed in the phenotype because another allele of that gene is dominant.
Twins who are formed when two separate ova are fertilized by two separate sperm at roughly the same time.
The basic unit for the transmission of heredity.
Two genes of one pair that differ in some way.
Trisomy-21
Observable characteristics of a person.
A trait that is influenced by many genes.
Cells from which any other specialized type of cell can form.
The single cell formed from the union of a sperm and an ovum.
In Vitro Fertilization; fertilization that takes place outside the woman's body.