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level: Level 1

Questions and Answers List

level questions: Level 1

QuestionAnswer
ChromatidsThe two identical halves of a single replicated chromosome and joined at the centrosome
Meiosisa type of cell division that results in four genetically different daughter cells each with half the number of chromosomes of the parent cell (also known as reduction division)
Crossing Overprocess in which homologous chromosomes exchange portions of their chromatids during meiosis (also called gene shuffling)
Haploid (N)term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set of genes (Humans N = 23)
Diploid (2N)term used to refer to a cell that contains both sets of homolgous chromosomes (Humans 2N = 46)
Non-DisjunctionError in meiosis in which homologous chromosomes fail to separate, resulting in gametes with too many or too few chromosomes
GameteThe result of meiosis is 4 gametes, or sex cells, that each contain half of the genetic information in the parent organism.
How many daughter cells are produced that are haploid?Four
TetradsTetrads are the two homologous chromosomes that are attached together. Also called synapsis.
What are the different phases of Meiosis 2 in order?Prophase 2, Metaphase 2, Anaphase 2, Telophase 2, and Cytokinesis.
Mitosisfirst stage of cell division in eukaryote cells, which is division of cell nucleus
Chromatidone of two identical "sister" parts of a duplicated chromosome
Centrosomesusually located near the middle of chromatids.Each pair of chromatids is attached at an area called the ...
Interphaselife of a cell as one cell division after another seperated by an "in between" period of growth
ProphaseChromosomes become visible. Condensed chromosomes become attached to fibers in spindle at point near centromere of each chromatid.
Metaphasechromosomes line up across center of cell. Microtubules connect the centromere each of chromosomes to two poles of spindle
AnaphaseCentromeres join sister chromatids split,allowing sister chromatids to separate and become individual chromosomes.
Telophasechromosomes were distinct and condensed, begin to disperse into a tangle of dense material. A nuclear envelope re forms around each cluster of chromosomes. spindle begins to break apart and nucleolus becomes visible in each daughter nucleus.
CytokinesisCytoplasm divides. Result 2 identical daughter cells. Asexual reproduction - growth regeneration- repair
Spindlea fanlike microtubule structure that helps seperate the chromosomes.