Vocabulary
What is a centromere?
Part of the chromosome that links the sister chromatids together.
Which Part of Mitosis is occurring?
The duplicated chromosomes line up down the middle of the cell.
Metaphase
What part of the cell cycle is this?
Looking at a slide of root tip cells, most of them would be in this stage.
Interphase
A spermatogonium (stem cell) undergoes mitosis. What are the products?
Two genetically identical diploid (2n) cells.
A mass of body cells that grows and divides uncontrollably, but is encapsulated within a layer of connective tissue and does not spread is called a…
Benign Tumor
Sister Chromatids
Each contains a double helix of DNA. They are held together by a centromere.
What organelle produces the spindle fibers that move the chromosomes during mitosis?
Centriole
What part of the cell cycle is this?
In plants, a cell plate forms and separates the two cells
Cytokinesis
A spermatocyte undergoes meiosis. What are the products?
Four genetically different haploid (n) cells.
Which growth control mechanism is being ignored in a body cell that continues dividing, even though the tissue in which it resides has become overcrowded?
Density-dependent inhibition
Chromosome
Threadlike structure carrying genetic information in the form of genes. We consider a chromosome to be made up of a single chromatid.
OR
We call sister chromatids a chromosome also.
What part of Mitosis is this?
Chromatin condenses into chromosomes during this stage. The nucleolus also disappears
Prophase
During which phase of Interphase does the cell duplicate its DNA (and chromatids)?
(S) Synthesis
Which of the following is not an advantage of asexual reproduction compared to sexual reproduction?
More genetic diversity in the offspring
Sperm are the male ____________
Gamete cell
Daughter Chromosomes
Are the end product of Mitosis, an identical form of DNA is now in two separate cells.
What part of Mitosis is this?
Sister chromatids are separated for the first time by the spindle apparatus.
Anaphase
Which two phases within the cell cycle are NOT a part of Mitosis?
Cytokinesis
Interphase
What type of cells participate in Mitosis?
Mitosis: Somatic cells
During which stage in meiosis does the crossing over of chromosomes occur?
Prophase I
Chromatin
The material that makes up a chromatid(made of protein, DNA, RNA)
What part of Mitosis is this?
The cytoplasm of the cell divides, forming a cleavage furrow in animals
Telophase
What part of the cell cycle is this?
DNA is in the form of chromatin during this phase. The cell is performing its normal activities.
Interphase
What type of cells participate in Meiosis?
Gametic Cells
Homologous chromosomes are…
A pair of chromosomes within a genome from each parent