Gene duplication

CRISPR Cas9 CRISPR Cas9 is a gene editing tool that can be used to edit, delete, and change parts of the genome. What makes CRISPR Cas9 different from other gene editing techniques such as Zinc Finger Nuclease (ZFN) or Transcription Activator-Like Effector Nucleases (TALEN) is its targeting efficiency ability. For example, ZFNs and TALENs could only reach targeting efficiencies from 1% to 50% in human cells. On the other hand, CRISPR Cas9 had a much higher rate at greater than 70% in Zebrafish…

Chemotaxis is the directional migration of cells in response to a chemical stimulus. The movement of these cells can either be directed towards favourable chemicals (chemoattractants) or unfavourable chemicals (chemorepellents). In particular, sugars and amino acids can attract many species of bacteria via chemotaxis, and the main method used to identify these chemicals is an assay that uses a glass capillary (Abe et al., 2017). In the capillary assay, the outer chamber contains mobile cells…

Huntington’s disease (HD) is one of many neurological conditions that exist and is prevalent in about 7 people per 100,000 (Lundy-Ekman, 2013, p. 245). It is more commonly seen areas of a predominantly white population, such as Europe, North America, as well as Australia, due to a higher frequency of certain alleles that are repeated in these populations (Walker, 2007, p. 221). This disease is classified as a neurodegenerative disorder, which is a term that is used to describe CNS…

Benjamin Harouni Sigurdsen BISC 120 Lab November 2014 Modeling the regeneration of Gugesia dorotocephala: The window into human regeneration Introduction: The field of regenerative medicine aspires to control the ability to regulate the growth of organs and appendages. In order to control the growth and help those who suffer from injuries, defects and degenerative diseases, scientists must learn about the natural molecular tools that animals use to repair damage to their bodies. The medical…

whether they should allow testing to continue and what laws should be created or even if this technology should be released for use by the general public. This technology is harmful because it has many risks. Continuing research and possibly making gene editing a regular happening could have a huge negative impact on the moral and ethical views of society. Designer baby technology would be harmful because it may lead to discrimination against women. To begin with, livescience.com says “the ACOG…

disease, meaning that it is caused by a single defective gene located on the non-sex chromosome. Symptoms such as impairment of attention, inability to walk, and dysphagia begin between the ages of thirty and fifty years of age. The illness lasts around 15 years and ends in death. There are tests to determine whether one carries the gene responsible for the disease and prenatal screening can determine whether a fetus has inherited the gene. Purdy’s argument is fixated on the principle that we…

Bacteriophages are the viruses of bacteria. They are a sequence of genomes which rotate from one bacterium to the next encased by capsids which are protein shells, which kill the bacteria in the process. Bacteriophages are immensely important to evolution and ecology of bacteria. They have colossal impacts on the carbon cycle. Phages also contribute to biology's comprehension of life at a molecular level. In addition, bacteriophages were essential to the evolution of genetic engineering. Phage…

is one of the many vital genes that is highly controlled during caloric restriction, which leads to a number of biological variations to extend lifespan. Resveratrol’s activation of the SIRT1 gene affects a number of cellular processes. Resveratrol decreases nuclear factor kappa B (NFκB) activation.The nuclear factor kappa B is located in the cellular cytoplasm and moves to the nucleus upon activation where it stimulates transcription of multiple pro- inflammatory genes such as TNFα, IL-1, and…

I think that designer genes are morally wrong, except when it’s used to cure diseases. There are many reasons designer genes are wrong, and many unforeseen consequences. The majority of scientists think that customizing genes is wrong. You can’t just make “better people” using engineering (theoretically). In World War II, Adolf Hitler tried to make his own “Master Race”. He wanted to give everyone blonde hair and blue eyes by means of genetic engineering (O.I). Scientists in China…

Down Syndrome is caused by a problem arising from the chromosomes given to the baby. A Chromosome is the genes carried by the parents to be passed on to their offspring. The genes from the parents are passed through chromosomes. AS a baby cell develops these chromosomes will pair up to create 23 pairs of chromosomes. Down syndrome is caused by there being three copies of chromosome 21 instead…