Worksheet 1 Botany Students, In lecture today we covered flower structures found
ID: 209778 • Letter: W
Question
Worksheet 1 Botany Students, In lecture today we covered flower structures found in the Angiosperms. You need to learn two important events that occur during the life cycle of the Angiosperms- double fertilization and pollination. I would for you to understand information concerning the relationship between DNA and Chromosomes. Also how DNA segregates out during mitosis and meiosis. The questions below should be a review from genetics and freshman biology. A meristematic cell located in the root apical meristem before it has started to undergo cell division was discovered to contain 10 DNA molecules. Answer the following questions concerning DNA and chromosomes number during mitosis and after mitosis. Draw below the meristematic cell above showing the 10 DNA molecules in the form of chromosomes as they would appear in Gl stage; Prophase stage; two daughter cells after mitosis. How many DNA molecules would present during the G2 stage of the cell cycle? How many homologous chromosome pairs would present during the prophase stage of the cell cycle? How many chromatids would present during the metaphase stage of the cell cycle? How many homologous pairs would present during the metaphase stage of the cell cycle? How many chromosomes would present in cach cell after cytokinesis during telophase? DNA molecules? Homologous DNA pair? Are chromatids of homologous chromosome pairs genetically alike? Are sister chromatids of prophase chromosomes genetically alike? Would the "mother cell" (cell during Gl stage) be diploid or haploid? Would the two daughter cells formed after mitosis and cytokinesis be diploid or haploid? During anaphase which structures are pulled to opposite poles? B. Sister chromatids of each chromosome. D. Random chromosome pairs.Explanation / Answer
Q 1. As during S- phase the chromosome undergoes duplication, so duriing the G2 there will be 20 DNA molecules.
Q 2. There will be 5 homologous pair present during prophase stage of cell cycle.
Q3. During metaphase , there will be 20 chromatids present.
Q4. There will be 5 homologous pair during metaphase.
Q5. There will be 10 chromosome present in each cell after cytokinesis during telophase.
Q 6. Each chromosome consists of a DNA molecules before undergoing cell division. In homologous DNA pair, there will be same genes at the same loci.
Q 6. Non sister chromatid of homologous pair , are not genetically like.
Q 7. Sister chromatid of prophase are genetically alike they are simply replicated DNA molecules.
Q 8. Mother cell during G1 will be diploid.
Q9. Two daughter cell formed after mitosis and cytokinesis will be Diploid.
Q 10. The correct answer is option (b) sister chromatid of each chromosome.
Hopefully it helps thanks.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.