reflection Is cancer a disease due to genetics or environment? Cancer is a disease both caused by genetics and environmental factors. Each person has either proto-oncogenes or oncogenes. These are the genes that are responsible for regulating cell division. When a person has an oncogene it is a mutation of a proto-oncogene. The oncogene (dominant gene) tells the cell to continuously divide. This can be a problem if the cell is cancerous. Cancer cells are caused by a mutation in DNA. When the body is exposed
Premium Cancer DNA Gene expression
cancer. There are two main types of genes that play a role in cancer‚ ocnogenes and tumor suppressor genes. An important difference between the two is that ocnogenes result from the activation of proto-ocnogenes‚ but tumor suppressor genes cause cancer when they are inactivated. Ocnogenes are mutations of certain normal genes called pro to-ocnogenes. Proto-ocnogenes
Premium DNA Genetics Gene
Using P-element Induced Male Recombination to Generate a Deletion in the DMAP1 Gene on Chromosome Two in Drosophila melanogaster Abstract: The goal of this study was to induce a deletion in the DMAP1 gene on chromosome two in Drosophila melanogaster through P-element mobilization. The DMAP1 gene may be an essential gene‚ however not much is known about it. We attempted to uncover the function of DMAP1 by creating a series of genetic crosses and selecting for brown-eyed non-stubble male flies
Premium DNA Chromosome
Segregation. This experiment investigated the effects of complete and incomplete dominance on the behavior of two different genes for chlorophyll production in tobacco. Two sets of approximately 50-100 tobacco seeds were planted for one week. The plants were the F2 result of two sets of monohybrid F1 crosses Gg x Gg and CyCg x CyCg. A chromosome for these plants has two sets of genes. The gene at one locus has two alleles that code for normal chlorophyll production. Dominant allele represented as G produce
Premium
form of genes. Haploid The term used when a cell has only one set of chromosomes. Diploid The term used when a cell has two sets of chromosomes. 2) What is the difference between homologous chromosomes and sister chromatids? Homologous chromosomes have the same arrangement of genes but are not connected to each other. Sister chromatids are identical: the result of DNA replication. The two connected chromatids are considered to be one chromosome. 3) What are tumor suppressor genes (11.18-11
Premium DNA Gene Genetics
10: Living with Cancer and Other Chronic Conditions Key Terms regulatory gene Genes that control cell specialization‚ replication‚ DNA repair‚ and tumor suppression. oncogenes Faulty regulatory genes that are believed to activate the development of cancer. proto-oncogenes Normal regulatory genes that may become oncogenes. metastasis The spread of cancerous cells from their site of origin to other areas of the body. benign Noncancerous; localized nonmalignant tumors contained within a
Free Cancer
BS801 Genes R Us Questions for study: 1. What functions do transcription and translation carry out‚ and where are they carried out in the cell? Transcription: process of creating an equivalent RNA copy of a sequence of DNA Transcription is the first step leading to gene expression. The stretch of DNA transcribed into an RNA molecule is called a transcription unit and encodes at least one gene. Occurs in nucleus of the cell Translation: Translation is the production of proteins by decoding mRNA produced
Premium DNA Gene RNA
cancer cell‚ the genes which regulate cell growth and differentiation must be altered.[40] The affected genes are divided into two broad categories. Oncogenes are genes which promote cell growth and reproduction. Tumor suppressor genes are genes which inhibit cell division and survival. Malignant transformation can occur through the formation of novel oncogenes‚ the inappropriate over-expression of normal oncogenes‚ or by the under-expression or disabling of tumor suppressor genes. Typically‚ changes
Premium Cancer
1. What are some differences between Judy and Mariah that might make Judy more "at risk" for skin cancer than Mariah? (2 points) It is possible that Judy’s mother may have had a cancerous mole and could have passed on to Judy a mutated gene of the tumor suppressor. 2. What observations did Judy make concerning her mole? How could they have used the ABCDE’s of skin cancer assessment to further assist their observations? (2 points) She observed that her mole had become itchy‚ it had grown in size and
Premium Cancer
22nd January 2015 The causes of disease in humans A disease is defined as a disorder of structure or function in a human‚ animal‚ or plant‚ especially one that produces specific symptoms or that affects a specific location and is not simply a direct result of physical injury. In this essay I will explore the causes of disease in humans‚ in terms of pathogen infection‚ viruses‚ lifestyle factors and genetics. Infectious diseases are caused by pathogens; any organism that causes disease. Pathogenic
Premium Immune system Blood Bacteria