Chromotin Chromosome Microfilament r Centriole Nucleus Ribosomes Smooth endoplasmic reticulum Mitochondrion Rough endoplasmic reticulum Golgi apparatus Lysosome Structure of Eukaryote
Structure of Eukaryote Chromotin & Chromosome
Chromotin Chromosome Euchromatin Heterochromatin Condensed Lightly Strongly Genetic Information Including Not including Replicate time Early Late Mainly Location Cytoplasm Cell nucleus Encoded protein Yes No Function With important genetic Maintenance of information chromosome structure integrity Type No Constitutive Facultative 常染色质 异染色质
Chromotin & Chromosome Euchromatin Heterochromatin Condensed Lightly Strongly Genetic Information Including Not including Replicate time Early Late Mainly Location Cytoplasm Cell nucleus Encoded protein Yes No Function With important genetic information Maintenance of chromosome structure integrity Type No Constitutive & Facultative
Chromotin Chromosome Sex chromotin X chromatin X body Barr body
Sex chromotin X chromatin X body Barr body Chromotin & Chromosome
Chromotin Chromosome Lyon hypothesis(1961) 1.Inactivation of all but one X chromosome 2.Happened at an early stage of embryogenesis 3.Happened on a random basis and maintained in all descendant cells √Dosage compensation
✓ Lyon hypothesis (1961) 1.Inactivation of all but one X chromosome 2.Happened at an early stage of embryogenesis 3.Happened on a random basis and maintained in all descendant cells ✓ Dosage compensation Chromotin & Chromosome
Chromotin Chromosome Sex chromotin Y-chromatin
Y-chromatin Chromotin & Chromosome Sex chromotin