a particular plant species, 2n=12. For this organism, how many chromosomes, and how many DNA molecules will be present per cell for each of the following? a) leaf in cell G1 b) leaf cell in G2 c)root meristem cell in metaphase of mitosis d) root meristem cell in anaphase of mitosis e) root meristem cell in telophase of mitosis (cytokinesis complete) f) microspore
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In a particular plant species, 2n=12. For this organism, how many chromosomes, and how many DNA molecules will be present per cell for each of the following?
a) leaf in cell G1
b) leaf cell in G2
c)root meristem cell in metaphase of mitosis
d) root meristem cell in anaphase of mitosis
e) root meristem cell in telophase of mitosis (cytokinesis complete)
f) microspore mother cell (in anther) in prophase 1 of meiosis
g) microspore mother cell in metaphase II of meiosis
h) pollen grain ( after meiosis is and cytokinesis complete)
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- In a plant in which 2n = 24, what is the total number of chromosomes present at the end of interphase? A) 6 B) 12 C) 24 D) 48 E) 96In a particular plant species, 2n=12. For this organism, how many chromosomes, and how many DNA molecules will be present per cell for each of the following? e) root meristem cell in telophase of mitosis (cytokinesis complete) f) microspore mother cell (in anther) in prophase 1 of meiosis g) microspore mother cell in metaphase II of meiosis h) pollen grain ( after meiosis is and cytokinesis complete)A cell in G1 of interphase has 8 chromatins. How many chromosomes and how many DNA molecules will be found per cell as this cell progresses through the following stages: a) metaphase b) anaphase c) after cytokinesis in mitosis d) metaphase I e) anaphase I f) metaphase II g) anaphase II h) after cytokinesis of meiosis II
- What is the difference between a chromosomes and a chromatids? a) there is no difference they are the same b) chromatids is always one stand of dna chromosomes can be one or two strand depending on the phase of the cell cycle c) chromatids is always two strands of dna chromosomes can be one or two stands depending on the phase of the cell cycle d) chromosomes are homologous chromatids are identicalA cell in G1 of interphase has 12 chromosomes. How many chromosomes and DNA molecules (chromatids) will be found per cell when this original cell progresses to the following stages? a) G2 of interphaseb) Metaphase I of meiosisc) Prophase of mitosisd) Prophase II of meiosise) After cytokinesis following mitosis f) After cytokinesis following meiosisIf a cell that had two copies of each chromosome, but problems with the spindle caused the sister chromatids to remain attached to each other and to only one spindle pole, what cells would result? a) cells with 2 copies of each chromosome and 2 copies of each chromosome b) cells with 3 copies of each chromosome and 1 copy of each chromosome c) cells with 6 copies of each chromosome and 2 copies of each chromosome d) cells with 4 copies of each chromosome and 0 copies of each chromosome e) cells with 1 copy of each chromosome and 1 copy of each chromosome
- A cell undergoing division has a haploid chromosome number of 15. Give the numerical value for each of the following: a) number of chromatids in a cell in anaphase of mitosisb) number of chromosomes in a cell in metaphase of mitosisc) number of homologous pairs in a cell in prophase of meiosis I d) number of chromatids in a cell in metaphase of meiosis IIe) number of centromeres in a cell in prophase of meiosis II f) number of centromeres following cytokinesis of meiosis IWhich of the following are differences between mitosis and meiosis I? CHOOSE ALL THAT APPLY. A) Crossing over occurs during meiosis I but not during mitosis B) DNA replication takes place prior to mitosis, but not before meiosis I C) Sister chromatids separate in mitosis, and homologs separate in meiosis I D) Only meiosis I results in daughter cells that contain identical genetic information E) Meiosis I results in two daughter cells, while mitosis results in four daughter cells8) The diagram below represents a yeast cell that is in the process of budding, a form of asexual reproduction. Nucleus -Bud "Nucleus Which of the following statements describes the outcome of this process? A) The two cells that result will each contain half the species number of chromosomes. B) The two cells that result will have identical DNA. C) The bud will develop into a zygote. D) The bud will start to divide by the process of meiotic cell division.
- If there are 24 chromosomes in a somatic cell in the Gap 1 of the cell cycle, what is the diploid number of chromosomes for this organism? a) 48 b) 12 c) 24 d) 35Draw a diagram of the cell cycle and label the phases. On your diagram: a) For each phase, indicate whether the chromosomes are condensed or not. b) Indicate the phase(s) when it is possible to do a karyotype c) Indicate the phase-transition(s) where the cell would arrest if you add hydroxyurea.14) The plus-end of the microtubule (select all that apply) a) has the same structure as the minus-end b) connect to kinetochores in the mitotic spindle c) connect to centrosomes in the mitotic spindle d) have proteins that bind and change plus-end dynamics e) None of the above