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Concept explainers
A.
To explain: The model which accounts more readily for the features of the highly rearranged chromosomes.
Concept introduction: Chromosomal aberrations are changes in the normal structure of chromosome by addition, deletion, inversion and translocation. Chromosomal aberrations results in change in the gene order and inactivation of genes. If the genes involved in cell cycle are inactivated then cell cycle errors occurs which leads to cancer cells. There are two models regarding rearrangement of chromosomes which are studied that account for 2 to 3 % of all cancers which includes: Progressive Rearrangements Model (PRM) and Chromosome Catastrophe Model (CCM). Progressive Rearrangements model is where continuous chromosomal aberrations take place and several genes are rearranged. Chromosome Catastrophe Model is where the chromosome gets broken into several fragments and then stitched back together by Non Homologous End Joining (NHEJ).
B.
To explain: The way in which multiple chromosomal rearrangements arise.
Concept introduction: Chromosomal aberrations are changes in the normal structure of chromosome by addition, deletion, inversion and translocation. Chromosomal aberrations results in change in the gene order and inactivation of genes. If the genes involved in cell cycle are inactivated then cell cycle errors occurs which leads to cancer cells. There are two models regarding rearrangement of chromosomes which are studied that account for 2 to 3 % of all cancers which includes: Progressive Rearrangements Model (PRM) and Chromosome Catastrophe Model (CCM).
C.
To explain: The arrangements are likely causative agents of cancers in which they have found or the rearrangements are just passenger events that are unrelated to cancer.
Concept introduction: Chromosomal aberrations are changes in the normal structure of chromosome by addition, deletion, inversion and translocation. Chromosomal aberrations results in change in the gene order and inactivation of genes. If the genes involved in cell cycle are inactivated then cell cycle errors occurs which leads to cancer cells. There are two models regarding rearrangement of chromosomes which are studied that account for 2 to 3 % of all cancers which includes: Progressive Rearrangements Model (PRM) and Chromosome Catastrophe Model (CCM).
To explain: The way in which chromosome rearrangements activate an oncogene or inactivate tumor suppressor gene.
Concept introduction: Chromosomal aberrations are changes in the normal structure of chromosome by addition, deletion, inversion and translocation. Chromosomal aberrations results in change in the gene order and inactivation of genes. If the genes involved in cell cycle are inactivated then cell cycle errors occurs which leads to cancer cells. There are two models regarding rearrangement of chromosomes which are studied that account for 2 to 3 % of all cancers which includes: Progressive Rearrangements Model (PRM) and Chromosome Catastrophe Model (CCM).
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Chapter 20 Solutions
Molecular Biology of the Cell (Sixth Edition)
- A negligence action was brought by a mother against a hospital on behalf of her minor daughter. It alleged that when the mother was 13 years of age, the hospital negligently transfused her with Rh-positive blood. The mother's Rh-negative blood was incompatible with and sensitized by the Rh-positive blood. The mother discovered her condition 8 years later during a routine blood screening ordered by her healthcare provider in the course of prenatal care. The resulting sensitization of the mother's blood allegedly caused damage to the fetus, resulting in physical defects and premature birth. Did a patient relationship with the transfusing hospital exist?arrow_forward18. Watch this short youtube video about SARS CoV-2 replication. SARS-CoV-2 Life Cycle (Summer 2020) - YouTube.19. What is the name of the receptor that SARS CoV-2 uses to enter cells? Which human cells express this receptor? 20. Name a few of the proteins that the SARS CoV-2 mRNA codes for. 21. What is the role of the golgi apparatus related to SARS CoV-2arrow_forwardState the five functions of Globular Proteins, and give an example of a protein for each function.arrow_forward
- Diagram of check cell under low power and high powerarrow_forwarda couple in which the father has the a blood type and the mother has the o blood type produce an offspring with the o blood type, how does this happen? how could two functionally O parents produce an offspring that has the a blood type?arrow_forwardWhat is the opening indicated by the pointer? (leaf x.s.) stomate guard cell lenticel intercellular space none of thesearrow_forward
- Identify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forwardIdentify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forward
- Identify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forwardWhat type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forward
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