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Genetics   [ Biology ]
Noun: Geneticist

  Dictionary of botanic terminology - index of names

     
  The study of genes , heredity, and the variation of organisms: how particular qualities or traits are transmitted from parents to offspring  

The genetics is a branch of biology that deals with heredity transmission and the variation of inherited characteristics among similar or related organisms (or the genetic properties or features of an organism). It study of how traits are passed down from one generation to another, through the genes.

  • Geneticist = a student or biologist who specializes in genetics
Adjective: Genetic    [ Biology ]
Adverb: Genetically
     
  (1) Relating to heredity, inherited; having to do with information that is passed from parents to offspring through genes.  
  (2) Of or relating to the science of genetics; "e.g. genetic research"  

Typically used when referring to the study of DNA, genes or chromosomes (the physical structures that guide development and are the basis for inheritance) Each gene contains information that directs the activities of cells and controls the way an individual develops, genetic material is inherited by offspring from their parents.

For example: "genetic material"; "genetic code" ; "genetic mutation": "genetically transmitted features"; " genetic disease"

Adjective: Genetic    [ Pedology ]
Adverb: Genetically
     
  Resulting from, or produced by, soil-forming processes; for example, a genetic soil profile or a genetic horizon.  

 

 


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Holdfast roots  [ Botany  ]

Dictionary of botanic terminology - index of names

 
     
  Some species of climbing plants develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place.  
     
Climbing plants, like the poison ivy (Toxicodendron radicans), Boston ivy (Parthenocissus tricuspidata), and trumpet creeper (Campsis radicans),  develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place. Usually the Holdfast roots die at the end of the first season, but in some species they are perennial. In the tropics some of the large climbing plants have hold-fast roots by which they attach themselves, and long, cord-like roots that extend downward through the air and may lengthen and branch for several years until they strike the soil and become absorbent roots.

Major references and further lectures:
1) E. N. Transeau “General Botany” Discovery Publishing House, 1994
     

 

 

 

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