Bio Literary Task Essay

1664 words - 7 pages

Research question – How has the study of DNA fingerprinting and modern genetics supported Darwin’s Theory of Evolution by Natural Selection, thus making it the most widely accepted mechanism for evolution to date?
The aim of this scientific report is to provide evidence on how DNA fingerprinting and modern genetics have supported Darwin’s Theory of Evolution. Aspects such as the use of DNA fingerprinting and the study of genetics will be discussed. All of this information will be in relation to the research question stated above.
DNA fingerprinting and modern genetics can be utilised to document the history evolution. By studying variation among species, scientists are able to ...view middle of the document...

However, scientists strongly believe that the study of genetics has provided ample evidence to support Darwin’s theory and this is the reason that Darwin’s theory is the most widely accepted and supported mechanism for evolution to date.

DNA Fingerprinting/DNA Profiling
DNA profiling is the process of using molecular biological techniques to classify, identify and study the evolution of organisms based on differences in DNA sequences. Scientists can learn a great deal from studying DNA in both plants and animals and therefore, can come to conclusions as to their origins. There are various ways in which scientists can study DNA. A process called PCR (polymerase chain reaction) can be used to replicate a small amount of DNA so that scientists can have a larger sample of DNA to analyse; and can then use this sample to study evolutionary change.
DNA analysis reveals the true origin of the chameleon
Until very recently, scientists have favoured the idea that chameleons evolved in Madagascar and then dispersed using ocean currents to Africa. DNA profiling has proven this theory to be incorrect. A process called Phylogenetic analysis was used by Dr Krystal Tolley – head of the Molecular Ecology Programme at the South African National Biodiversity Institute – to reconstruct the evolutionary relationship and history between groups of chameleons. This was possible as DNA accumulates mutations over time and species which have the same mutations share a common ancestor.
Dr Krystal Tolley carried out a Phylogenetic analysis between chameleon species and other reptile species known as Squamata. The research showed that chameleons dispersed from other lizards 90 million years ago. Chameleons then dispersed out of Africa using ocean currents in three separate periods:
• 65 million years ago - ground species of
chameleon from Africa dispersed to Madagascar

• 47 million years ago - arboreal species of
chameleon from Africa dispersed to Madagascar

• 34 million years ago - arboreal species of
chameleon from Africa dispersed to the Seychelles

Genetics is the study of how physical and behavioural traits are inherited. Technological advances in genetics have proven to be extremely useful in many fields including anthropology, biology and medicine. Modern genetics has enabled scientists to confirm Darwin’s theory of natural selection and therefore, has confirmed that species diverge from a common ancestor. There have been many important discoveries in the field of genetics:
o 1850s – Gregor Mendel discovers how genetic information is passed down from generation to generation
o 1920s – Thomas Hunt Morgan discovers that genes are located on chromosomes
o 1950s – Scientists discover that DNA is a double helix
o 1960s – Restriction enzymes are discovered which can cut through DNA
o 1980s – Scientists discover that some DNA sequences are unique to individuals
How has genetics provided evidence for the theory of evolution?
Charles Darwin knew almost...

Find Another Essay On Bio Literary Task

When the Bubble Burst Essay

1539 words - 6 pages By the time I arrived state side from my second tour in the Middle East the housing bubble had already burst. I noticed a drastic change in the way that many of my friends and family were living. Several of my friends that worked in real estate had sold their boats and seconds houses. My own stock portfolio had lost a third of its value. My sister and her husband had defaulted on their home mortgage leaving them scrambling for a place to live. I

phase diagram Essay

4456 words - 18 pages Introduction: Chemical equilibrium is a crucial topic in Chemistry. To represent and model equilibrium, the thermodynamic concept of Free energy is usually used. For a multi-component system the Gibbs free energy is a function of Pressure, Temperature and quantity (mass, moles) of each component. If one of these parameters is changed, a state change to a more energetically favorable state will occur. This state has the lowest free energy

Revolutionary Work of Art

1890 words - 8 pages Walter Benjamin emphasizes in his essay, “The Work of Art in the Age of its Technological Reproducibility” that technology used to make an artwork has changed the way it was received, and its “aura”. Aura represents the originality and authenticity of a work of art that has not been reproduced. The Sistine Chapel in the Vatican is an example of a work that has been and truly a beacon of art. It has brought a benefit and enlightenment to the art

Enlightenment Thought in New Zealand Schools

1594 words - 6 pages In this essay I will be looking at how the political and intellectual ideas of the enlightenment have shaped New Zealand Education. I will also be discussing the perennial tension of local control versus central control of education, and how this has been affected by the political and intellectual ideas of the enlightenment. The enlightenment was an intellectual movement, which beginnings of were marked by the Glorious Revolution in Britain

Psychological Egoism Theory

2240 words - 9 pages The theory of psychological egoism is indeed plausible. The meaning of plausible in the context of this paper refers to the validity or the conceivability of the theory in question, to explain the nature and motivation of human behavior (Hinman, 2007). Human actions are motivated by the satisfaction obtained after completing a task that they are involved in. For example, Mother Teresa was satisfied by her benevolent actions and

How Celtic Folkore has Influenced My Family

1587 words - 6 pages Every family has a unique background that influences the way they live and interact with other people. My parents, who emigrated from Ireland to the States with my three brothers in 1989, brought over their own Celtic folklore and traditions that have helped shaped the way our family operates and lives. One aspect of folklore that has helped shape my family dynamic is the Celtic cross—both its background and what role it has played in our lives

Julia Margaret Cameron

1406 words - 6 pages At a time when women were looked upon as being homemakers, wives, mothers and such the late 1850's presented a change in pace for one woman in specific. Photography was discovered in 1826 and soon after the phenomenon of photography was being experimented with and in turn brought new and different ways of photo taking not only as documenting real time, but also conceptualizing a scene in which an image would be taken. Julia Margaret Cameron will

Evaluation of School Improvement

1403 words - 6 pages The evaluation process should be progressive to incorporate overall planning, implement changes, which contribute to success. In order to focus on school climate and norms, the evaluation design must include the students, instructions, and outcomes to improve communication and building-level concerns to be address in this response. School Climate and Social Norms The school principal, other staff leaders, and personnel set the tone and the

Case Study: The Benefits of Animal Testing

1757 words - 7 pages Nine year old Amy has already had a rough start in life. She was born with an abnormal heart that hinders her everyday activities. Amy is unable to keep up with kids her own age because she often tires out easily. As a consequence, she has very little friends and is often alone. Amy is forced to take different medications everyday just to survive. Amy’s life consists of medicine, doctors, and constant hospital visits. However, Amy is due for a

Myth and Magic: Realism in "One Hundred Years of Solitude"

1531 words - 6 pages “He enjoyed his grandmother's unique way of telling stories. No matter how fantastic or improbable her statements, she always delivered them as if they were the irrefutable truth” (Wikipedia, 2011). Experiences are particular instances of one personally encountering or undergoing something and in these moments of time life changes for the best or the worst and memories are formed. These recollections such as riding your first bicycle, going to

Adiponectin: a Novel Indicator of Malnutrition and Inflammation in Hemodialysis Patients

2384 words - 10 pages Objective Protein-Energy malnutrition (PEM) and inflammation are common and overlapping conditions in hemodialysis patients which are associated with increased risk of morbidity and mortality. Adiponectin is an adipocytokine which is exclusively produced by adipose tissue. Few studies in hemodialysis patients have demonstrated that serum levels of adiponectin were significantly higher in malnourished patients compared to well-nourished ones. The

Similar Essays

Comparing Narrative Of The Life Of Frederick Douglass And Invisible Man

733 words - 3 pages Ellison. Although both have the same foundation, the difficult task of being black and trying to make something of one's life, many important differences exist between these works. First, the language used by the authors is strikingly dissimilar. Next, the time periods in which these pieces of literature were written have a difference of over one hundred years. Finally, the main characters are faced with different circumstances and

Affective States Influencing Creativity Essay

2016 words - 9 pages Introduction The concept of affective states influencing creativity can be found documented as far back as the writings of Aristotle, in his words, “No great mind every existed without a touch of madness.” Exploration of this concept can be found in early studies conducted by Andreasen (1988), Jamison (1995), and Ludwig (1988). These researchers indicate high levels of affect disorders in persons who have achieved literary eminence. A

Gucci Essay

3723 words - 15 pages existence of the various schools of thought in philosophy. Hermeneutic Understanding of Symbol The philosophic examination of chi symbolism in Igbo context is hinged on fictional text of the great Igbo novelist and thinker, the Igbo biographer Chinua Achebe. Achebe is the bases of my emphasis due to the fact that he is a more universally accepted literary authority on Igbo person. The attempt in effect is to philosophically examine what chi

Utopias Of 21st Century Essay

9963 words - 40 pages of the utopian imagination. (Soneson, 120) The resulting defense of a pragmatist and feminist form of Utopian thinking is an important contribution not only to the ongoing task of developing a feminist pragmatism but also and perhaps even more significantly to our public life, as experts of the field point to a way for us to think critically and practically about the societal goals we are pursuing and might pursue.Noting that both feminism and