It is important so that each daughter cell has an exact copy of the chromosomes to express/create proteins
replicating DNA more then once per cell cycle would continually increase the number of genes per cell. This is determental to the organism.
The S-phase is during interphase, which means there are no chromosomes. DNA is replicated in the S-phase ("s" for synthesis). It can only be replicated in the form of chromatin, not wrapped up in chromosomes.
Chromosomes can be seen during cell divison, Reference Before a cell gets ready to divide by mitosis, each chromosome is duplicated (during S phase of the cell cycle
Chromosomes replicate in the Interphase part of Meiosis and throughout the whole process of Meiosis they only replicate once.
1 time only which is done during the only interphase in meiosis.
Meiosis: Meiosis produces daughter cells that have one half the number of chromosomes as the parent cell. (Also the sexual cell cycle that requires to different cells) Mitosis: Mitosis produces two daughter cells that are identical to the parent cell. (Also the asexual cell cycle that requires only the one parent cell)
The S-phase is during interphase, which means there are no chromosomes. DNA is replicated in the S-phase ("s" for synthesis). It can only be replicated in the form of chromatin, not wrapped up in chromosomes.
The Zygote is the only diploid cell in the haploid cell life cycle.
Internal Regulators Proteins that respond to events inside the cell are called internal regulators. Internal regulators allow the cell cycle to proceed only when certain processes have happened inside the cell. For example, several regulatory proteins make sure that a cell does not enter mitosis until all its chromosomes have been replicated. Another regulatory protein prevents a cell from entering anaphase until all its chromosomes are attached to the mitotic spindle. Internal Regulators Proteins that respond to events inside the cell are called internal regulators. Internal regulators allow the cell cycle to proceed only when certain processes have happened inside the cell. For example, several regulatory proteins make sure that a cell does not enter mitosis until all its chromosomes have been replicated. Another regulatory protein prevents a cell from entering anaphase until all its chromosomes are attached to the mitotic spindle. Internal regulators are proteins that respond to activity within a cell.
Chromosomes can be seen during cell divison, Reference Before a cell gets ready to divide by mitosis, each chromosome is duplicated (during S phase of the cell cycle
1 time only which is done during the only interphase in meiosis.
Chromosomes replicate in the Interphase part of Meiosis and throughout the whole process of Meiosis they only replicate once.
The only thing the lytic cycle is more efficient in is killing the cell. The lytic cycle is when the initiation of making lots of bacteria copies begin. Once complete, the cell bursts and the virus products will scatter and infect other cells.
skin cancer (any cancer for that matter) is when the cell cycle becomes completely unregulated and only performs cell division without its normal cell functions.
Meiosis: Meiosis produces daughter cells that have one half the number of chromosomes as the parent cell. (Also the sexual cell cycle that requires to different cells) Mitosis: Mitosis produces two daughter cells that are identical to the parent cell. (Also the asexual cell cycle that requires only the one parent cell)
false a living cell can reproduce more than once
Proteins called internal regulators and external regulators control the cell cycle. Internal regulatory proteins allow the cell cycle to proceed only when certain events have occurred in the cell itself. External regulatory proteins direct cells to speed up or slow down the cell cycle.
A female will only ovulate once per menstrual cycle, typically this occurs 12-16 days before menstruation. During the 24 hours of ovulation it is possible to release multiple eggs, but most commonly only one egg is released per cycle.