NON-MENDELIAN INHERITANCE

• Non-Mendelian Inheritance


  A type of inheritance wherein the patterns of phenotypes does not coincide with those that was presented in the Mendelian law of inheritance.
• Genetics


  A branch of biology concerned with the study of genes, genetic variation and heredity of organism.
• Inheritance


  A process by which genetic information is passed or from parents to child.
• Homozygous


  means having two identical alleles.
• Heterozygous


  Means having two different alleles.
• Punnet square


  a graphical representation of the possible genotypes of an offspring arising from a particular cross or breeding event.
• Codominance


  Both alleles are expressed equally in the phenotype of the heterozygote.
• Heredity


  A biological process where a parent passes certain genes onto their children or offspring.
• Deoxyribonucleic acid (DNA)


  is a molecule that encodes an organisms genetic blueprint. In other words, DNA contains all of the information required to build and maintain of oranism.
• Human DNA


  is stretched out measures some 6 feet.
• Haploid


  describes a cell that contains a single set of chromosomes.
• Locus


  in genetics is a fixed position on a chromosome, like the position of a gene or a marker.
• Allele


  Alternative version of an specific gene.
• Genotype


  is the particular the combination of alleles for a particular gene of locus.
• Phenotype


  all the observable characteristics of an organism that result from the interaction of its genotype.
• Multiple alleles


  A gene that is controlled by more that two alleles.
• 3 kinds of sex-related inheritance

  1. Sex- linked traits
  2. Sex- influenced traits
  3. Sex-limited traits
• Sex-linked traits


  these are inherited through the X chromosomes.
• Sex-influenced traits


  occur when phenotypes are different between males and females with the same genotype.
• Sex-limited traits


  can only be expressed in one sex or the other.

  • The traits are not found on the X and Y chromosomes, meaning they are generally autosomal.
• Ribose


  is a sugar, like glucose, but with only five carbon atoms in its molecule.
• Deoxyribose


  is almost the same but lacks one oxygen atom.