Please enable JavaScript.

Coggle requires JavaScript to display documents.

CHROMOSOME STRUCTURE - Coggle Diagram

- - - - protect and prevent the ends of chromosomes stick together
      - shelterin
- - - - sperm are much smaller than egges and hold fewer mitochondria
      - research in some eukaryotes
        
        paternal mitochondria are selectively eliminated by autophagy
        
        the mechanism is not known
  - - - replicative segregation
      - mixture of mutant and wild-type organelles
      - xảy ra ở khi tạo female gamete
        
        hội chứng động kinh: khi toàn bộ mutant type mitochondria tập trung bên trứng được thụ tinh
- - - - DNA sequence that is present only once or a few times in genome
    - - 150-350Bp
      - two types of repeats
        
        Tandem repeats
        
        one after another - tend to be clustered
        
        Interspersed repeats
        
        are scattered thought the genome
        
        example: Alu sequence: 300 Bp sequence, constitutes of 11% the human genome, no obvious cellular function
        
        SINEs: short interspersed elements
        
        LINEs: long interspersed
    - - short sequences - less than 10 Bp
      - in tandem and clustered in certain regions of the chromosome
      - especially in centromeres and telomeres - protective structures
      - called satellite DNA: proportions of four bases differ from those of other DNA sequences
      - most highly repetitive DNA has no known function