CHAPTER 3 : CELL DIVISION
Definition of terms Chromatid Either one of the two strands formed when a chromosome duplicates itself during S phase The chromatids are joined together by a single centromere H omologous chromosome The TWO chromosomes that make up a matched pair in a diploid cell Same length Same centromere position
Mitosis, Meiosis and the Cell Cycle
• During mitosis, each daughter cell receives one chromatid of each chromosome In this electron micrograph of a whole chromosome, Note that: • The chromosome consists of two chromatids • The chromatids are joined at the centromere • The chromatids are composed of chromatin strands, similar to those in nuclei, but packed
Cell division & Cell cycle - Mahidol Wittayanusorn School
•Chromosome ที่แยกออกไปยังขั้วเซลล์ประกอบด้วย 2 chromatid ท าให้จ านวนโครโมโซมที่ขั้วเซลล์ทั้งสองต่างลดจ านวนลงครึ่งหนึ่ง
MITOSIS AND MEIOSIS
metaphase and chromatid segregation in anaphase Does crossing over occur? No, because chromosomes do not pair up (synapsis), there is no chance for crossing over Following cytokinesis what chromosomes do the daughter cells contain? Daughter cells contain the same number and kind of chromosomes that were in the original cell
Structure et organisation de la chromatine
3 Structure et organisation de la chromatine I Chromatine et ses différents niveaux de compaction L’ADN humain présente une longueur physique de 1,8 m lorsqu’il est entièrement déroulé
Crossing Over and Gene Mapping
(2) But if crossovers occur in between the two genes during meiosis, then the heterozygous parent will generate all four possible gametes: GW, gw, Gw and gW, and we will see all four offspring phenotypes, perhaps:
APPENDIX 3 GENETIC AND RELATED EFFECTS
APPENDIX 3 507 Appendix 3A (contd) End-pointa Code Definition NON-MAMMALIAN SYSTEMS (contd) Inseet systems R G G C C C A DMG DMM DMX DMC DMH DML DMN Drosophila melanogaster, genetic crossing-over or recombination
MAN-MADE VITREOUS FIBERS - Navy Medicine
SCE - sister chromatid exchange SEM - scanning electron microscopy SMR - standardized mortality ratio; a ratio of observed deaths in a disease study group (cohort) to the number that would be expected if the cohort were subjected to the risks (rates) from an appropriately matched standard population
[PDF] caryotype en arabe
[PDF] réalisation d'un caryotype animation
[PDF] caryotype humain pdf
[PDF] caryotype humain definition
[PDF] bandes sombres claires chromosomes
[PDF] caryotype standard
[PDF] resultat caryotype foetal
[PDF] caryotype constitutionnel postnatal sanguin
[PDF] caryotype constitutionnel prix
[PDF] resultat caryotype combien temps
[PDF] caryotype sanguin fiv
[PDF] trisomie 21 cours pdf
[PDF] suivi médical trisomie 21
[PDF] la trisomie 21 causes