Biology Chapter 12
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Sex Chromosomes | Genetic chromosomes called X and Y (determines gender)
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| Autosomes | Remaining chromosomes in body
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| Sex-linked trait | Trait thats coded for by an allele on a sex chromosome
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| Linked gene | Pairs of genes that tend to be inherited together
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| Chromosome map | Diagram that shows the linear order of genes on a chromosome
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| Map Unit | Frequency of crossing-over of 1%
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| Germ-cell mutation | Occur in Organisms gametes
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| Somatic- cell mutation | Take place in an organism's body cells and can therefore affect the organism
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| Lethal mutation | Causes death before birth
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| Deletion | Loss of a chromosome, due to breakage
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| Inversion | Chromosomal segment breaks, flips around backward, and reattaches
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| Translocation | Piece of one chromosome breaks off and reattaches to a non homologous chromosome
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| Nondisjunction | Chromosome fails to separate from its homologue during meiosis
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| Point mutation | Change that occurs within a single gene
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| Substitution | One nucleotide replaces another
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| Frameshift mutation | Making all amino acids downstream change
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| Insertion mutation | One or more nucleotides are added to a gene
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| Pedigree | Diagram shows how trait is inherited
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| Carrier | Individuals such as the four people in the 5th generation
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| Genetic Disorder | Disabling conditions that have a genetic basis
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| Polygenic | Characters influenced by several genes
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| Complex Character | Characters that are influenced strongly both by environment and by genes
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| Multiple allele | Genes with 3 or more alleles
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| Codominance | Both alleles are expressed in the phenotype of a heterozygote
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| Incomplete Dominance | Individual displays a trait that is intermediate between the two parents
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| Sex-influenced trait | Involved in other complex characters
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| Huntigton's Disease | Autosomal dominat condition characterized by forgetfulness and irritability
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| Amniocentesis | Allows removal of some amniotic fluid from amnion sac surrounds the fetus
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| Chorionic villi sampling | Chrorionic villi cells derived from the zygote that grows between the mothers uterus and placenta between 8th and 10th week
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| Genetic counseling | Informing a person about genetic info
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| Gene Therapy | Healthy copy of gene is placed in copy of gene thats defective
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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