Chapter 13 Key Terms

• p. 274: hybridizations, segregating, true-breeding
  
• p. 275: self-fertilization, cross-fertilization
  
• p. 276: first filial, F1, dominant, recessive, second filial, F2
  
• p. 278: Mendelian ratio, alleles, homozygous, heterozygous, genes, locus (plural, loci)
  
• p. 279: genotype, phenotype
  
• p. 280: Punnett square
  
• p. 281: testcross, Mendel's First Law of Heredity, Law of Segregation
  
• p. 282: dihybrids
  
• p. 283: Mendel's Second Law of Heredity, Law of Independent Assortment
  
• p. 284: multiple alleles, epistasis, pleiotropic
  
• p. 285: modified ratio
  
• p. 286: mutant, X chromosome, Y chromosome, sex-linked
  
• p. 288: crossing over
  
• p. 289: genetic map, centimorgan, syntenic, linked, three-point cross, wild type
  
• p. 290: codominant
  
• p. 291: cell surface antigens
  
• p. 292: ABO blood groups, RH blood group, erythroblastosis fetalis, autosomes, sex chromosomes
  
• p. 293: Barr body, primary nondisjunction, monosomics, trisomics, Down syndrome, translocation Down syndrome
  
• p. 294: Klinefelter syndrome
  
• p. 295: Turner syndrome, mutation, genetic disorder, cystic fibrosis
  
• p. 296: Sickle-cell anemia, Tay-Sachs disease, gangliosides
  
• p. 297: hemophilia
  
• p. 298: phenylketonuria (PKU), Huntington's disease
  
• p. 299: genetic counseling, high-risk pregnancy, amniocentesis, ultrasound
  
• p. 300: chorionic villi sampling, restriction enzymes, restriction fragment length polymorphisms, RFLPs