Allele

As humans become less human from changing and eliminating certain diseases, they are also getting rid of the alleles that cause the disorders, which is not necessarily good. For example, the allele for Sickle-Cell Anemia causes a greater resistance to malaria, which nearly half the population is susceptible to obtaining (www.newscientist.com). Although the disorder may be harmful, the allele of its own is helpful. The change of DNA changes the human germline and once it’s changed, it won’t be…

distinct populations of the same species. It can be a new genetic variation to be produced in population of organisms that can reproduce sexually by recombination and in individuals by gene and chromosome mutations. During sexual reproduction, progeny alleles from both parents and these have been migrated or hybridized, so that it may come from different populations and gene pools (Nee, 2004). Harmless mutation and sexual recombination may consent to the advancement of new-fangled…

spread its immunity to the next generation. This is a result of an allele frequency change. For example, “This more recent population has a different allele frequency than the original population, as a result of selection for those bacteria that have a genetic makeup consistent with antibiotic resistance” (Evidence of evolution). The exact opposite of these kinds of evolutions would be macroevolution, which is evolution, or allele frequency change seen in a species over a long period of…

production of gametes and plant spores. I have heard a lot about mitosis but not enough about meiosis. 5. Heterozygous-having dissimilar pairs of genes for any hereditary characteristic.Heterozygosity occurs when an individual has two different alleles of a gene. I've never heard of this word before. It's nice to learn about allele's as well.
 6. Carrier-A carrier is a person who has a change in one copy of a gene. I had always heard the word "carrier" because of friends with the sickle cell…

Claim Scenario 1 demonstrates genetic drift. Evidence In scenario 1, 50 organisms were placed in a container to represent the parent generation. Twentyfive of the 50 organisms were marked, and 25 were unmarked (50% marked, 50% unmarked).The marks on the organisms represent a trait, the unmarked organisms don’t have that trait. After that, roughly half of the organisms in the previous container were put in container 2, these represented the organisms that survived, also known as generation 2. In…

Aims/Objectives of Investigation I am intrigued by the process of clinical investigation and the development of medical care in disorders that currently immedicable and incurable. My prime aim for this project is to examine and investigate the current state of medical research regarding treatment, therapies and understand the leading solutions in the aim to cure Tay-Sachs disease. This includes exploring the achievements attained and challenges facing the medical researchers and clinical…

Oday Alsoltani Prof. Meegan ESL 400 Assignment #3 12/04/2014 Prompt: Childhood Obesity; who are to Blame? “Childhood Obesity” Who is responsible for childhood obesity? For the past 30 years, childhood obesity has increased rapidly. Children obesity between the ages of 6-11 years old has increased by 7% in 1980 to over 17% in 2012. The difference between overweight and obese is that overweight is the percentage of fat, muscle, bone, water, or all of that in body weight for each particular…

The etiology, or cause of Alzheimer’s is idiopathic, or unknown. Scientists do not yet fully understand what causes the changes in the brain to take place resulting in cognition problems. However, it is found that there is a genetic link in some cases of early onset, familial Alzheimer’s. Familial Alzheimer’s is caused by single gene mutations on chromosomes 21, 14, and 1 (Disease Genetics). These mutations cause formation of abnormal proteins which eventually can lead to the plaques and tangles…

selection and evolution. The example of sickle-cell anemia and malaria is also an example of microevolution. Microevolution is essentially evolution on a small-scale within a certain population. This type of evolution involves the heredity and change of alleles.16 In the case of sickle-cell anemia and malaria, many people from Africa are heterozygous for the gene because they are immune to…

The fossil record; what is it? First of all we need to know what a fossil is. A fossil is evidence of a life from years ago which has been preserved in some way. This includes impressions or remains of an organism embedded in strata (Biology Online, 2011). Now that you have an idea of what fossils are, what is the fossil record? The fossil record provides information about the history of life on earth through the placement of fossils within the rock strata. The fossil record also shows how a…