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- Draw and label G1 and G2 stages of interphase and each stage of mitosis (in order) for a cell that has two large and two small chromosomes, 2n=4. For unreplicated chromosome draw a line ( / ) and for replicated chromosome draw an X. Since we are focusing on the DNA, you can skip drawing the nuclear membrane or spindle fibers. For simplicity, do not indicate that the chromosomes are decondensed chromatin during interphase. Mark and label a place on one of the large chromosomes with the dominant allele of the “A” gene and put the recessive allele “a” on the other homolog. Mark and label a place on one of the small chromosomes with allele “B” and put the recessive allele “b” on the other homolog.a. Manually, using a pencil, draw a cell in anaphase II from an organism in which 2n = 2 and each chromosome is metacentric. b. Given that each G1 nucleus from this organism contains 16 picograms of DNA, how many picograms of chromosomal DNA would you expect in the cell shown here?For below problem, consider a diploid cell that contains three pairs of chromosomes designated AA, BB, and CC. Each pair contains a maternal and a paternal member (e.g., Am and Ap). Using these designations, demonstrate your understanding of mitosis and meiosis by drawing chromatid combinations as requested. Be sure to indicate when chromatids are paired as a result of replication and/or synapsis. You may wish to use a large piece of brown manila wrapping paper or a cut-up paper grocery bag for this project and to work in partnership with another student. We recommend cooperative learning as an efficacious way to develop the skills you will need for solving the problems presented throughout this text. Question: Assume that each gamete resulting from Problem 29 fuses, in fertilization, with a normal haploid gamete. What combinations will result? What percentage of zygotes will be diploid, containing one paternal and one maternal member of each chromosome pair?
- Draw a chromosome and a pair of homologs (or homolog pairs, or homologous chromosomes). Label on the chromosome and homologous pair; the centromere and sister chromatids. In each of these drawings explain how many and where are the Watson and Crick double strand DNA molecules. 2.Diagram of the cell cycle (not cell division) for an organism with two chromosomes (n=2, 2n=4). Include; interphase (including the G1, S, G2 phases), mitosis and cell cycle checkpoints. 3.For an organism with 4 chromosomes draw: a. Metaphase of Mitosis, b. Metaphase of meiosis I, Metaphase of meiosis II.Explain the following terms: Non-histone Chromosomal (NHC) proteins, euchromatin & Heterochromatin.For Problems 24–29, consider a diploid cell that contains three pairs of chromosomes designated AA, BB, and CC. Each pair contains a maternal and a paternal member (e.g., Am and Ap, etc.). Using these designations, demonstrate your understanding of mitosis and meiosis by drawing chromatid combinations as requested. Be sure to indicate when chromatids are paired as a result of replication and/or synapsis. You may wish to use a large piece of brown manila wrapping paper or a large cut-up paper bag and work with another student as you deal with these problems. Such cooperative learning may be a useful approach as you solve problems throughout the text. Assume that each resultant gamete participated in fertilization with a normal haploid gamete. What combinations will result? What percentage of zygotes will be diploid, containing one paternal and one maternal member of each chromosome pair?
- consider a diploid cell that contains three pairs of chromosomes designated AA, BB, and CC. Each pair contains a maternal and a paternal member (e.g., Am and Ap, etc.). Using these designations, demonstrate your understanding of mitosis and meiosis by drawing chromatid combinations as requested. Be sure to indicate when chromatids are paired as a result of replication and/or synapsis. You may wish to use a large piece of brown manila wrapping paper or a large cut-up paper bag and work with another student as you deal with these problems. Such cooperative learning may be a useful approach as you solve problems throughout the text. Draw all possible combinations of chromatids during anaphase II in meiosis.Human somatic cells have 46 chromosomes. Are the cells different in any way from the parent cell and what is chromosome count of each of those cells once they have finished mitosis?Answer the questions below: 1. Rarely , both sister chromatids of a replicated chromosome end up in one daughter cell. How might this happen and what could be the consequences of such mitotic error?2. Liver cells proliferate excessively both in patients with chronic alcoholism and in patients withliver cancer. Is alcohol an anti-apoptopic compound?
- 1. Illustrate the stages of mitosis using these chromosomes. Utilize the back portion of your paper for your drawings. 1b 20 2d 1a Legend: lb and 2d – red la and 2c – black (you may use any 2 color pens available)In the absence of Separase, how would this affect the chromosomes dynamic during mitosis? Explain in detail. *Normal events in mitosis gives rise to daughter cells with exactly the same chromosome number and genetic material. What may be expected to happen chromosomally and genetically to: 1. a cell with a chromosome that contains two centromeres?