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genomeq - subphase of interphase draw the cell cycle what...

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Practice Problems for Exam 1. Questions are from Human Heredity, Principles and Issues 7 th edition, Cummings (answers are given at the end of the text for the questions indicated in bold) Chapter 2 : Cell Structure and Function; Mitosis and Meiosis How many autosomes are present in a body cell of a human being? 44 autosomes in a somatic cell and 22 autosomes in a gamete define chromosome and chromatin chromosome – organized structure of DNA and proteins, chromatin – one of two identical parts of chromosome after S phase human haploid gametes (sperm and egg) contain 23 chromosomes, 23 chromatids what are sister chromatids identical copies of a chromosome, opposed to homologous chromosome (contains same genes and alleles, homologous contains same genes but two copies of alleles that may or may not be the same) created during S
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Unformatted text preview: subphase of interphase draw the cell cycle, what is meant by the term “cycle” In the cell cycle? What is happening at the s phase and the m phase? M phase = nuclear division (mitosis) and cytoplasmic division (cytokinesis) S phase = DNA synthesis, chromosomes are replicated (aka DNA effectively doubled) in the cell cycle, at which stages do two chromatids make up one chromosome? S? does the cell cycle refer to mitosis as well as meiosis? it is possible that an alternate mechanism for generating germ cells could have evolved. Consider meiosis in a germ cell precursor (a cell that is diploid but will go on to make gametes). If the s phase were skipped, which meiotic division (meiosis I or meiosis II) would no longer be required?...
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