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Science Unit 5

Science Unit 5.

TermDefinition
DNA deoxyribonucleic acid, a molecule that is present in all living cells and that contains information that determines the traits that a living thing inherits and nee to live.
Chromosomes in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in prokaryotic cell, the main ring of DNA.
Cell cycle the life cycle of a cell
Inter phase the period of the cell cycle during which activities such as cell growth and protein synthesis occur without visible signs of cell division.
Mitosis in eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes.
Cytokineses the division of the cytoplasm of a cell
Homologous chromosomes chromosomes that have the same sequence of genes and the same structure
Meiosis a process in cell division during which the number of chromosomes decreases to half the original number by two divisions of the nucleus, which results in the production of sex cells.
Asexual reproduction reproduction that does not involve the union of sex cells and in which one parent produces offspring that are genetically identical to the parent.
Sexual reproduction reproduction in which the sex cells from two parents unite to produce offspring that share traits from both parents.
Fertilization the union of a male and female gamete to form a zygote
What are the Phases of Mitosis Prophase Metaphase Anaphase Telophase
What are the Phases of Meiosis? Prophase 1 Metaphase 1 Anaphase 1 Telophase 1 and cyrokinesis Prophase 2 Metaphase 2 Anaphase 2 Telophase 2 and cytokinesis
How do organisms reproduce asexually? Organisms reproduce many ways. In bacteria and archaea, asexual reproduction happens through cell division. In single celled organisms and multicellular organisms asexual reproductive involves mitoses.
Created by: ks.28966
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