Search Results

• • 6 

    Books

  • Sort by: sorttype.publication.date.desc Newest sorttype.publication.date.asc Oldest sorttype.article.type Document Title sorttype.relevance Relevance

• Select Parthenogenesis

  1

  Parthenogenesis

  Author:Steven MackenzieFrom:The Gale Encyclopedia of Science (Vol. 6. 6^th ed.)

  2021875 words Topic overview 1320LParthenogenesis in animals refers to reproduction in which a new individual genetically identical to the parent develops from an unfertilized egg. The analogous event in plants, which results in seed formation without...
• Select Moss

  2

  Moss

  Author:Peter A. EnsmingerFrom:The Gale Encyclopedia of Science (Vol. 5. 6^th ed.)

  20211,605 words Topic overview 1160LThe mosses are the largest of the three classes in the plant phylum Bryophyta. They have been divided into three subclasses: the true mosses (Bryideae), the peat mosses (Sphagnideae), and the granite mosses...
• Select Chromatin

  3

  Chromatin

  Editors:Katherine H. Nemeh and Jacqueline L. LongeFrom:The Gale Encyclopedia of Science (Vol. 2. 6^th ed.)

  2021443 words Topic overview 1200LChromatin refers to the DNA (deoxyribonucleic acid) and associated proteins packaged together in the nucleus of a eukaryotic cell in a nondividing state. During cell division (mitosis or meiosis) chromatin masses...
• Select Meiosis

  4

  Meiosis

  Author:Cheryl TaylorFrom:The Gale Encyclopedia of Science (Vol. 5. 6^th ed.)

  20211,383 words Topic overview 1340LMeiosis, also known as reduction division, consists of two successive cell divisions in diploid cells. The two-cell divisions are similar to mitosis, but differ in that the chromosomes are duplicated only once, not...
• Select Cell Division

  5

  Cell Division

  Author:Terry WatkinsFrom:The Gale Encyclopedia of Science (Vol. 2. 6^th ed.)

  2021853 words Topic overview 1240LCell division is the process by which a single living cell splits to become two cells. All cells divide at some point in their lives. Cell division occurs in single-celled organisms like bacteria, and in multicellular...
• Select meiosis

  6

  meiosis

  Editors:E. D. Hirsch, Jr., Joseph F. Kett, and James TrefilFrom:The New Dictionary of Cultural Literacy: What Every American Needs to Know (3^rd ed.)

  2002113 words Brief article, Defin... 1210LPronunciation: (meye-oh-sis) Division of cells in which four "daughter" cells are produced from one "parent" cell, each with half the genes of the parent. Meiosis is a key process in sexual reproduction. In the...