PRACTICAL APPLICATIONS OF GENETICS

Biology

PRACTICAL APPLICATIONS OF GENETICS

  • Study of genetics has been put into a wide variety of uses encompassing plants and animals and in particular humans. Blood transfusion
  • Blood groups are genetically determined.
  • As discussed earlier a person of blood group A can only get blood from another one of A or O.
  • In case of emergencies and unavailability of blood, a patient may be given blood group A + when he/she is A-.
  • First transfusion is fine since, by the time enough antibodies are produced most of the red blood cells of donor have completed their lifespan but a subsequent transfusion of A+ blood is fatal.
See also  GASEOUS EXCHANGE IN PLANTS

Plant and animal breeding

  • Genetics is applied mostly in plant and animal breeding in order to produce varieties that are most suitable to man’s needs.
  • This is done through artificial selection.
  • Varieties are developed that are resistant to pests, diseases or harsh climatic conditions.

Genetic counseling

  • Genetic counseling involves advising about hereditary diseases and disorders so that they can make informed decisions.
See also  MENDELS WORK IN GENETICS

This is done through:

  • Taking family history.
  • Screening for genotypes e.g. through amniocentesis.
  • In amniocentesis, cells are obtained from amniotic fluid during pregnancy.
  • Conditions such as Down’s syndrome can be detected using microscopy.

See also

MUTATIONS

LINKAGE

COMPLETE AND INCOMPLETE DOMINANCE

STRUCTURE OF DNA

STRUCTURE AND PROPERTIES OF CHROMOSOMES

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