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14 terms

Sappington Science Explorer Cells and Heredity Chapter 4

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multiple alleles
three or more forms of a gene that code for a single trait
sex chromosome
a pair of chromosomes carrying genes that determine whether a person is male or female
sex-linked
a gene that is carried on the X or Y chromosome
carrier
a person who has one recessive allele for a trait, but does not have the trait
genetic disorder
an abnormal condition that a person inherits through genes or chromosomes
pedigree
a chart or "family tree" that tracks which members of a family have a particular trait
karyotype
a picture of all the chromosomes in a cell arranged in pairs
selective breeding
the process of selecting a few organisms with desired traits to serve as parents of the next generation
inbreeding
a selective breeding method in which two individuals with identical or similar sets of alleles are crossed
hybridization
a selective breeding method in which two genetically different individuals are crossed
clone
an organism that is genetically identical to the organism from which it was produced
genetic engineering
the transfer of a gene from the DNA of one organism into another organism, in order to produce an organism with desired traits
gene therapy
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
genome
all of the DNA in one cell of an organism