Ms. Frost  A world of biology.....
  • Welcome
    • Data bases for labs
    • IB Calendar
  • IB: Introduction to cells
    • Origin and Division of Cells
    • Membrane Structure and transport
    • Structure of DNA and RNA
    • DNA Replication
    • Transcription and gene expression
    • Translation
    • Genetic modification and biotechnology
  • Molecules to Metabolism
    • Molecular diagrams
    • Water
    • Carbohydrates and Lipids
    • Proteins and Enzymes
    • Lactase / Enzyme Inhibition
    • Cellular Respiration
    • Phases of Cellular Respiration
    • Earth atmosphere / Color
    • Photosynthesis
  • Digestion and absorption
    • The kidney and osmoregulation
    • Neurons and synapses
    • Muscle and Movement
    • The blood system
    • Gas exchange
    • Defense against infectious disease
    • Antibody production and vaccination
    • Hormones, Homeostasis
    • Sexual reproduction
  • Genetics and Genes
    • Chromosomes
    • Meoisis
    • Inheritance
    • MORE Inheritance
  • Evidence of evolution
    • Natural selection
    • Gene pools and speciation
    • Classification of biodiversity
    • Cladisitics
  • Ecology Species, communities and ecosystems
    • Energy Flow
    • Carbon Cycling
    • Climate change
  • Option C: Species and communities
    • Option C: Communities and ecosystems
    • Option C: Impacts of human on ecosystems
    • Option C: Conservation of biodiversity
  • Plants: Transport in the xylem of plants
    • Transport in the phloem of plants
    • Growth in plants
    • Reproduction in plants
  • Anatomy Language
    • Epithelial/Connective/Skeletal
    • Muscular / Nervous Tussue
    • Heart
  • Western Hills Website
  • Science in the News
  • World Population Clock

Inheritance

Theory of knowledge:
Mendel’s theories were not accepted by the scientific community for a long time. What factors would encourage the acceptance of new ideas by the scientific community?
Understandings:
• Gametes are haploid so contain only one allele of each gene.
• The two alleles of each gene separate into different haploid daughter nuclei during meiosis.
• Fusion of gametes results in diploid zygotes with two alleles of each gene that may be the same allele or different alleles.
• Dominant alleles mask the effects of recessive alleles but co-dominant alleles have joint effects.
Mendel discovered the principles of inheritance with experiments in which large numbers of pea plants were crossed.
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Skill: Construction of Punnett grids for predicting the outcomes of monohybrid genetic crosses.
Do the quiz at the right!  Can you answer all correctly?  Make sure to read the tutorials if needed.  
Genetic problems quiz
Skill: Comparison of predicted and actual outcomes of genetic crosses using real data.
Some genetic diseases are sex-linked. The pattern of inheritance is different with sex-linked genes due to their location on sex chromosomes.
​Application: Red-green color blindness and hemophilia as examples of sex-linked inheritance.

Skill: Analysis of pedigree charts to deduce the pattern of inheritance of genetic diseases
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Many genetic diseases in humans are due to recessive alleles of autosomal genes, although some genetic diseases are due to dominant or co-dominant alleles.
Many genetic diseases have been identified in humans but most are very rare.
   Aim 8: Social implications of diagnosis of mutations, including the effects on the family and stigmatization.
Application: Inheritance of cystic fibrosis and Huntington’s disease.  
​Click below to learn how the mutation works to form cystic fibrosis.
​Research the different case studies to see how it is treated.
Cystic Fibrosis case study
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Application: Inheritance of ABO blood groups.
​
 The expected notation for ABO blood group alleles is:
      Phenotype                   Genotype 
         A                              IAIA or IAi
         B                              IBIB or IBi
        AB                             IAIB
         O                              ii



Radiation and mutagenic chemicals increase the mutation rate and can cause genetic diseases and cancer.
Application: Consequences of radiation after nuclear bombing of Hiroshima and accident at Chernobyl. 
​
The year 2016 marks 70 years after Hiroshima was bombed August 6, 1945.  There are multiple articles out about the victims and survivors.  Chernobyl happened April 26, 1986.
chenobyl's radioactive reindeer
consequences of chernobyl
remembering A bomb's legacy at hiroshima
Long term effects of hiroshima and nagasaki
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  • Welcome
    • Data bases for labs
    • IB Calendar
  • IB: Introduction to cells
    • Origin and Division of Cells
    • Membrane Structure and transport
    • Structure of DNA and RNA
    • DNA Replication
    • Transcription and gene expression
    • Translation
    • Genetic modification and biotechnology
  • Molecules to Metabolism
    • Molecular diagrams
    • Water
    • Carbohydrates and Lipids
    • Proteins and Enzymes
    • Lactase / Enzyme Inhibition
    • Cellular Respiration
    • Phases of Cellular Respiration
    • Earth atmosphere / Color
    • Photosynthesis
  • Digestion and absorption
    • The kidney and osmoregulation
    • Neurons and synapses
    • Muscle and Movement
    • The blood system
    • Gas exchange
    • Defense against infectious disease
    • Antibody production and vaccination
    • Hormones, Homeostasis
    • Sexual reproduction
  • Genetics and Genes
    • Chromosomes
    • Meoisis
    • Inheritance
    • MORE Inheritance
  • Evidence of evolution
    • Natural selection
    • Gene pools and speciation
    • Classification of biodiversity
    • Cladisitics
  • Ecology Species, communities and ecosystems
    • Energy Flow
    • Carbon Cycling
    • Climate change
  • Option C: Species and communities
    • Option C: Communities and ecosystems
    • Option C: Impacts of human on ecosystems
    • Option C: Conservation of biodiversity
  • Plants: Transport in the xylem of plants
    • Transport in the phloem of plants
    • Growth in plants
    • Reproduction in plants
  • Anatomy Language
    • Epithelial/Connective/Skeletal
    • Muscular / Nervous Tussue
    • Heart
  • Western Hills Website
  • Science in the News
  • World Population Clock