Topic 9 Genetics Vocabulary 36-69
Terms in this set (34)
A lethal recessive human genetic disorder that causes an excessive secretion of mucus and consquent vulnerability to infection
A recessive human genetic disorder that leads to deformed red blood cells.
A dominant genetic disorder that causes progressive deterioration of brain cells that does not appear until the age of 30 or so.
A technique of prenatal diagnosis in which amniotic fluid is analyzed to detect certain genetic defects in the fetus.
chorionic villus sampling
A technique of prenatal diagnosis in which a small sample of the fetal portion of the placenta is removed and analyzed to detect certain genetic in the fetus.
chromosome theory of inheritance
Principle that states that genes are located on chromosomes and that the behavior of chromosomes during meiosis accounts for inheritance patterns.
An individual with the normal (most common) phenotype.
A gene that is carried on the X or Y chromosome.
A gene located on the X chromosome; such genes show a distinctive pattern of inheritance.
Duchenne muscular dystrophy
A human genetic disease caused by a sex-linked recessive allele; characterized by progressive weakening and a loss of muscle tissue.
An X-linked trait in which an individual cannot perceive certain colors.
X-linked recessive disorder defined by the absence of one or more proteins required for blood clotting.
Inactivated X chromosome in females.
An observable feature appearing only in members of one sex, although both sexes may have the genes that determines the traits
Genes located on the same chromosome that tend to be inherited together in genetic crosses.
The regrouping of genes in an offspring that results in a genetic makeup that is different from that of the parents.
Offspring with a phenotype that matches one of the parental phenotypes.
Offspring who have inherited new combinations of genes and have phenotypes that don't match either parental phenotypes
The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
Graphical representation of the arrangement of genes on a chromosome
A genetic map based on the frequencies of recombination between markers during crossing over of homologous chromosomes.
A measurement of the distance between genes; one map unit is equivalent to a 1 percent recombination frequency.
Statistical test to determine whether a distribution differs significantly from an expected theoretical distribution
Error in meiosis in which homologous chromosomes don't separate and gametes end up with wrong number of chromosomes
A chromosomal aberration in which one or more chromosomes are present in extra copies or are deficient in number.
A chromosomal condition in which a particular cell has only one copy of a chromosome, instead of the normal two.
A chromosomal condition in which a particular cell has an extra copy of one chromosome, instead of the normal two.
A chromosomal alteration in which the organism possesses more than two complete chromosome sets.
The loss of one or more nucleotides from a gene by mutation; the loss of a fragment of a chromosome
Change to a chromosome in which part of the chromosome is repeated
A kind of mutation in which the order of the genes in a section of a chromosome is reversed
Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome
Disorder caused my a third chromosome 21, leading to physical growth delays, distinct facial features, and intellectual disability.
Traits that follow inheritance other than simple dominance and recessiveness for a single gene trait
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