koofer 1 - Biology 1107 October 26,2004 Exam 3 Barstow FORM...

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Biology 1107 Exam 3 October 26,2004 Barstow FORM B - Even numbered seats Questions 1 - 3 refer to the drawings of two irair of homologous chro'mosoines as they might appear during various stages of mitosis or meiosis. gEx-T&o rh EaE 1) Which letter represents the bhromoSomal condition of a cell at the end of meiosis i? D 2) Which letter represents the chromosomal condition of a cell at the end of meiosis tr? E fr--i \I, A 3) Which letter represents the ctromosbmal condition of a cell at the end of mitosis? r{ What are the direct products of meios;ig in plants? Gametes Spores Sperm Sporophytes How does a cell in G2 of mitosis compare with a cell in Gl of the cell cycle? t has half the amount of cytoplasm and half the amount of DNA. has half the number of chromosomes and half the amount of DNA. has the same number of chromosomes and half the amount of DNA. has the same nrimber ofbhromosomes and the same arnount of DNA. has the same number of chromosomes and twice the amount of DNA. [t lt 6) The formation of a cell plate is beginning across the middle of a cell and nuclei are re-forming at opposite ends of the cell. What kind of cell is this? 6b; animal cell in metaphase dDb plant cell in metaphase (Fi'u" animal cell in teloplase -+1pffi plant cell undergoing cytokinesis (6)r animal cell undergoing cytokinesis' \-/ ^ \if - - Q----Q -J --- $* BothAandBare t elA 4F S'*> -'-
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Qi.restions 7 and 8 will use the key below: If the statement is true for.Mitosis only. , r If the statement is true for Meiosis I only If the statement is true for Meiosis II only If the statement is true for Mitosis and Meiosis I If the statement is true for Mitosis and Meiosis tr A. B: C. D. E. 7. The result is a daughter nucleus with the same chromosomal endowment as the 8. Indeipendent assortment of chromosomes occurs. f"f1 from interphase through anaphase from Gl of interphase though metaphase from metaphase through t'elophase from anaphase through telophase from G2 of interphase through metaphase '- _;- parent n\leug. fn I'ix- t 9. After te -B .? lophase I of meiosis, what is the chromosomal make-up of each daughter cell ? diploid, and the chromosomes are composed of single chromatid chromosomes diploid, and the chromosomes are composed of two chromatids .::*- haploid, and the chromosomes are composed of single chromatid,bhromosomes haploid, and the chromosomes are composed of two chromatids tetraploid, and the chromosomes are composed of two chromatids [email protected] which phase(s) of mitosis ilo we find 10) During which find chromosomes composed of two chromatids? i {€!e I i i, 11) How do cells at the completion of merosrs DNA and are just about to begin meiosis? compare with cells that have replicated their' trhey have twice the amount of cytoplasm and half the amount of DNA. rThev have half the number of chromosomes and half the amount of DNA.
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