Flash Cards

Mitosis and Meiosis

Question Answer
What is the process of mitosis? Prophase, metaphase, anaphase, and telophase
What two steps that aren't part of mitosis, but is essential to asexual reproduction? Interphase and cytokinesis
What is mitosis? Mitosis is cell division that creates two new daughter cells with identical DNA
What are three reasons why cells reproduce by asexual reproduction? For growth, repair, and replacement
What happens in interphase? Chromosomes (chromatin) duplicate and develop into sister chromatids at the end of prophase by condensing
What occurs in prophase? Centrioles appear and begin to move to opposite ends of the cell while spindle fibers form
What takes place during metaphase? Spindle fibers attach to the centromeres of the sister chromatids that are lined up in the center of the cell
What happens in anaphase? Chromatids separate and begin to move to opposite ends of the cell (guided by spindle fibers)
What occurs in telophase? Two new nuclei form and chromosomes appear as chromatin (mitosis ends)
What happens after mitosis? Cytokinesis occurs when a cell membrane moves inward to create two new daughter cells with identical chromosomes and their own nucleus
What does interphase consists of? Gap 1, gap 2, and s phase
What four factors control the entry into the m-phase? The mass factor, growth rate factor, time factor, and replication cells
What do the 3 gaps of interphase do? They get cells ready for mitosis by increasing their size, cells produce new proteins, and
replicating DNA
What makes up a chromosome? Two sister chromatids that are genetically alike
When does the nucleus of a cell disappear in mitosis? At the end of prophase
What is meiosis? When one diploid cell divides and makes four haploid sex cells
What are homologous chromosomes? Pairs of chromosomes that have genes with identical traits in the same order
What process has an egg and a sperm cell combining? Fertilization
What type of cell forms from fertilization? A zygote
What are diploid cells? Cells that have pairs of chromosomes
What are haploid cells? Cells that have only one chromosome from each pair
When do two chromosomes cross over? In prophase 1
What happens in prophase 2 compared to prophase 1? In prophase 2, there is only chromosome left in a cell while in prophase 1 there were 2 chromosomes.
What occurs in metaphase 2? In metaphase 2, chromosomes line up in the center of a cell.

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