Tag Archives: heredity

Unit 4 Biology – AoS 1: Heredity

 

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This Area of Study includes key knowledge about genetics and heredity:

Cell reproduction:

  • binary fission in prokaryotes
  • the phases of the cell cycle in eukaryotes including DNA replication, the division of the nucleus (mitosis), and cytokinesis
  • the key events that result in the production of haploid sex cells from a diploid cell (meiosis), including recombination

Molecular genetics:

  • the nature of genomes, genes and the genetic code
  • gene expression: the genetic code and roles of RNA in transcription, RNA processing in eukaryotes, and translation
  • the concept of gene regulation (the switching on and off of genes by factors expressed by regulator genes and environmental factors)

DNA tools and techniques:

  • gel electrophoresis;
  • DNA amplification;
  • DNA sequencing;
  • making a recombinant plasmid;
  • bacterial transformations;
  • DNA profiling;
  • gene cloning;
  • and using plasmids as gene delivery systems

There are a good series of six, (less than) ten-minute videos on YouTube that cover these concepts:

  1. Gene Technology1 of 6 – Restriction enzymes and ligation
  2. Gene Technology 2 of 6 – DNA probes and amplification
  3. Gene Technology 3 of 6 – PCR and gel-electrophoresis
  4. Gene Technology 4 of 6 – DNA fingerprinting
  5. Gene Technology 5 of 6 – DNA sequencing
  6. Gene Technology 6 of 6 – Gene cloning

Inheritance:

  • the nature of chromosomes, alleles, genotype and phenotype
  • the causes of phenotypic variation: mutations; recombination of parental alleles in sexual reproduction; polygenes; and interactions of environmental factors with genes
  • continuous and discontinuous variation
  • patterns of inheritance involving the monohybrid cross: dominance; recessiveness; co-dominance; multiple alleles
  • dihybrid crosses as independent or linked
  • pedigree analysis: autosomal and sex-linked inheritance; use of the test cross.

Some resources to assist your revision of this topic:

Semester 2 Biology – Adaptations (Y11) and Heredity (Y12)

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This semester we will be starting Unit 2 (Organisms in their Environment) Area of Study 1: Adaptations of Organisms and Unit 4 (Continuity and Change) Area of Study 1: Heredity. We have created Quizlet Sets for each of these topics: