How does the structure of chromosomes change during eukaryotic cell division?
During cell division, eukaryotic chromosomes condense into highly coiled structures. The tight coiling and high degree of organization in this supercoiled DNA facilitate proper segregation during mitosis and cell division.
How do chromosomes change during cell division?
As mitosis progresses, the microtubules attach to the chromosomes, which have already duplicated their DNA and aligned across the center of the cell. The spindle tubules then shorten and move toward the poles of the cell. As they move, they pull the one copy of each chromosome with them to opposite poles of the cell.
What happens to the chromosomes of a eukaryotic cell during mitosis?
During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. … Then, at a critical point during interphase (called the S phase), the cell duplicates its chromosomes and ensures its systems are ready for cell division.
What happens when eukaryotic cells divide?
In particular, eukaryotic cells divide using the processes of mitosis and meiosis. Mitosis is common to all eukaryotes; during this process, a parent cell splits into two genetically identical daughter cells, each of which contains the same number of chromosomes as the parent cell.
What do eukaryotic chromosomes consist of?
Each eukaryotic chromosome is composed of DNA coiled and condensed around nuclear proteins called histones.
How are chromosomes halved during meiosis?
The process by which the chromosome number is halved during gamete formation is meiosis. In meiosis, a cell containing the diploid number of chromosomes is converted into four cells, each having the haploid number of chromosomes. During meiosis II, those two cells each divide again.
How chromosomes can fit inside a eukaryotic nucleus?
Explain how chromosomes can fit inside a eukaryotic nucleus. The DNA double helix is wrapped around histone proteins to form structures called nucleosomes. Nucleosomes and the linker DNA in between them are coiled into a 30-nm fiber. During cell division, chromatin is further condensed by packing proteins.
Why is eukaryotic cell division more complex than prokaryotic?
Cell division is more complex in eukaryotes than prokaryotes. Prior to dividing, all the DNA in a eukaryotic cell’s multiple chromosomes is replicated. Its organelles are also duplicated. … As in prokaryotic cells, the cytoplasm must divide.