B311080114 - B311D080114 Index card information Course...

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B311D080114 Index card information Course organization Life cycles and cell division What is a homologous pair? What happens in meiosis? --Remember to be reading Chapter 13 --All discussion sections are going to be meeting this week --We will start using iClickers on Wednesday but it is not required until January 28 th Vocabulary -- Alteration of generations - a life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; characteristic of plants and some algae -- Asexual reproduction - a type of reproduction involving only one parent that produces genetically identical offspring by budding or by division of a single cell or the entire organism into two or more parts -- Autosomes - a chromosome that is not directly involved in determining sex, as opposed to a sex chromosome -- Chiasma - the x shaped, microscopically visible region representing homologous chromatids that have exchanged genetic material through crossing over during meiosis -- Clone - a lineage of genetically identical individuals or cells; in popular usage, a single individual organism that is genetically identical to another individual; as a verb, to make one or more genetic replicas of an individual or cell -- Crossing over - the reciprocal exchange of genetic material between nonsister chromatids during prophase one of meiosis -- Diploid cell - a cell containing two sets of chromosomes (2n), one set inherited from each parent -- Fertilization - the union of haploid gametes to produce a diploid zygote -- Gametes - a haploid cell, such as an egg or sperm; gametes unite during sexual reproduction to produce a diploid zygote -- Gametophyte - in organisms undergoing alteration of generations, the multicellular haploid form that mitotically produces haploid gametes that unite and grow into the sporophyte generation -- Genes - a discrete unit of hereditary information consisting of a specific nucleotide sequence on DNA (or RNA in some viruses) -- Genetics - the scientific study of hereditary and hereditary variation -- Haploid cells - a cell containing only one set of chromosomes (n) -- Hereditary - the transmission of traits from one generation to the next -- Homologous chromosomes - chromosome pairs of same length, centromere position, and staining pattern that posses alleles of the same genes at corresponding loci; one homologous chromosome is inherited from the organism’s father, the other from the mother -- Meiosis - a two stage type of cell division in sexually reproducing organisms that results in cells with half the chromosome number of the original cell -- Meiosis I - the first division of a two stage process of cell division in sexually reproducing organisms that results in cells with half the chromosome of the original cell -- Meiosis II - the second division of a two stage process of cell division in sexually reproducing animals that results in cells with half the chromosome number of the original cell --
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B311080114 - B311D080114 Index card information Course...

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