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Worksheet+7+-+Answer+Key - Bio 93 Worksheet 7 Lecture 15...

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Bio 93 Pooja Patel Worksheet 7 – Lecture 15 and 16 [email protected] Lecture 15: Cell Cycle, Mitosis Cell division: for reproduction and growth Two cell types o Somatic cells Diploid 2 copies of each chromosome o Gametes Haploid 1 copy of each chromosome All cells start as diploid cells Mitosis o Somatic cells o 2 Daughters cells identical to parents o Diploid Cell Cycle o Interphase G 1 : synthesis of macromolecules and cytoplasmic organelles S: DNA Synthesis/Replication Chromosome : DNA polymer Gene : nucleotide sequence for a unique protein DNA Replication o Before replication: 46 single chromosomes 0 chromatids o After replication 46 duplicated chromosomes 92 chromatids (46 pairs) o Semi-conservative After replication, DNA condenses G 2 : Additional growth o Mitosis 1. Prophase a. Mitotic spindle forms, made by centrosomes b. Chromosomes condense 2. Prometaphase a. Nuclear envelope fragments b. Kinetichores attach to
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This note was uploaded on 12/13/2011 for the course BIOSCI 93 taught by Professor Staff during the Fall '11 term at UC Irvine.

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Worksheet+7+-+Answer+Key - Bio 93 Worksheet 7 Lecture 15...

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