DNA Flashcards
How many histones in Nucleosome
8 Histones
What is Conformation
Shape of DNA
Cell State when Division
Metaphase chromosome
Cell State in No Division
Chromatin
Size of Nucleosome
10nm
Size of DNA
2nm
Why DNA is not One Strand
One strand is unstable
Size of chromatin domain
300nm
Size of metaphase chromosome
1400nm
What does Omnis cellula e Cellula mean
A cell comes from a cell
How many chromosome in Human Nucleus
46 chromosomes
46 chromosomes comes from
23 egg and 23 sperm
A complete set of chromosome is called
Ploidy
2n is called
Somatic cells
n is called
Gamete
What is hiploid cell
2n
Haploid cell is
1n
What is inside interphase
Gap 1, Synthesis and Gap 2
Cell division is called
Mitotic Phase
Mitotic phase stands of
Prophase - Prometaphase - metaphase - anaphase - telophase - cytokinesis
What happens in prophase
Mention 4
Nuclear envelope dissolved
Centrofome is formed
Spindle fibre is created
Aster is formed
What is Aster
Hairy like structure surrounding centrofome
What happens in prometaphase
Spindle fibre becomes kinetochore
Kinetochore is…
Spindle fibers going inside the nucleotide
What happens in metaphase
Chromosomes moves to metaphase plate
What happens in anaphase
Mention 3
Kinetocore shortens
Non Kinetocore lengthen
Chromosomes splits into two
What happens in telophase
Mention 3
Chromatid turns to chromatin
Nucleoli and nuclear membrane reappears
Spindle fibre gets depolymerized
When does cytokinesis happen
A bit after telophase
What happens in cytokinesis
Splitting the content of cytoplasm
Difference of cytokinesis in animal and plants in process
In Animal : Cleavage Formed and pinch from two directions (Cleavage Furrow)
In Plants : Cell plate formed from cell wall to split cell
Difference of Cytokinesis in Animal and plants
In Animal: Two daughter cells are exactly the same
In plants: Two daughter have same genetic materials
In Mitotic phase it happens only for … cells
Somatic Cell
Objective of Gap 1
To Complete a Cell
Objective of Synthesis
DNA Replication
Objective of Gap 2
Checking if everything ready for cell Division