DEFINITIONS AND KEY POINTS OF CHROMOSOME AND GENE LINKAGE

TERMS DEFINITIONS
Cell cycle The highly dispersed state of chromosomes is called chromatin.
Mitosis The   highly folded form during division of cell              is called
Nucleosothe Four types of Histone protein form a core particle called nucleosome.
Heterochromatic Heterochromatic        region      are      inactive       portions       of
Euchromatic The      active     portions     of     chromosomes       are    called


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euchromatic regions.

Sex chromosomes Chromosomes that are represented differently in females and males and function in sex determination are called sex chromosomes.
Linkage The genes present on the same chromosomes are called linked gene and this phenomenon is called linkage.
Point mutation The change of sequence of nucleotides is called point mutation.
Aneuploidy The random abnormal number of chromosomes in the animals is called as aneuploidy.
Polyploidy A condition in which the organisms have more than two complete sets of chromosomes is called polyploidy.

 

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