Cell Cycle
This phase of the cell cycle is associated with DNA replication.
What is the S phase?
This checkpoint fails in tumor cells.
What is the G1 checkpoint?
A diploid organism possesses 6 chromosomes. You expect to find how many chromosomes in the haploid version of this same organism.
What is three chromosomes?
Diploid cells have two sets of chromosomes. The term used to describe a cell with only one set of chromosomes is this.
What is haploid?
The musculoskeletal system develops from this early embryonic layer.
What is the mesoderm?
This phase of mitosis is associated with DNA supercoiling.
What is prophase?
This checkpoint failing results in a daughter cell receiving an extra chromosome.
What is the M checkpoint?
An animal sperm cell contains 40 chromosomes in its genome. You expect to find this many chromosomes in muscle cells of this same organism.
What is eighty (80) chromosomes?
Homologous chromosome crossover (recombination) occurs during this phase of meiosis.
What is prophase I?
This structure develops within seconds of egg fertilization by sperm and prevents fertilization by a second sperm.
What is the fertilization envelope?
Cleavage furrow is a characteristic specific to this type of cells.
The G2 checkpoint ensures that all chromosomes are fully replicated. If this criteria is satisfied, cells will proceed with this major phase of the life cycle.
What is mitosis? or What is prophase?
A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 24 picograms of DNA per nucleus. These many picograms of DNA would be found in a nucleus of a sperm cell of this same species.
What is 12 picograms?
Independent assortment of chromosomes occurs during this phase of meiosis.
What is metaphase I?
Meiosis in human females is arrested during this step between birth and follicle maturation after puberty.
What is prophase I?
This phase of the cell cycle is associated with stasis/no growth.
What is the G0 phase?
Passing the M checkpoint allows cells to proceed with this step.
What is anaphase (sister chromatid separation)?
These many chromosomes are found in the genomes of mules. Mules are hybrids of horses (2n = 64) and donkeys (2n = 62).
What is 63 chromosomes?
This are the locations where homologous chromosomes are recombined.
What are chiasmata?
Meiosis in human females is arrested during this step between birth and follicle maturation after puberty.
(Daily Double)
Meiosis in human females is arrested during this step between follicle maturation and fertilization.
In the cells of many eukaryotic species, the nuclear envelope must disappear to permit this event from happening.
What is attachment of the mitotic spindles to centromeres of chromosomes?
Failure of the mitotic spindle to replicate will lead to the cell cycle being halted during this checkpoint.
What is the M checkpoint?
Scientists isolate cells in various phases of the cell cycle. They isolate a group of cells that have 1 1/2 times more DNA than G1 phase cells. The most likely part of the cell cycle from which these cells were isolated is this phase.
What is S phase?
The metaphase plate is lined with a pair of homologous chromosomes during this stage of meiosis.
What is metaphase I?
These phases of the cell cycle are the only ones occurring during cleavage.
What are S and Mitosis?