Speciation

As the above statement declares Anton Chekhov's work had become some of the most relevant and important pieces of writing in Russia. He had begun a new era in writing and theatre. However Chekhov felt an anguish similar to many other great playwrights of the time when he saw his own plays misinterpreted by actors portraying melodrama, and the directors who encouraged it. The gap that he perceived between his playtexts and the performances they had been turned into led him to become bitter…

population have shown to be the oldest and least similar to the others. The characteristics of the population show they have been isolated the longest since they have the most amount of genetic similarity. Other populations like G. galloti show that speciation has occurred among them and resulted in geographic and reproductive isolation. Evolution among these species has occurred over time based on distance and time. Results support all of my charts because it fits well along the evolutionary…

Invasive plant species pose a tremendous threat to natural resources throughout the United States. Invasive species can choke out acres of native vegetation and greatly reduce wildlife habitat. Invasive plant species threaten every aspect of ecosystem health and productivity on public and private lands, threaten biological diversity by causing population declines of native species, and alter key ecosystem processes like hydrology, nitrogen fixation, and fire regimes. Preventing, managing, and…

Where did we come from? Even children become struck with the question about the origin of life. As tough as it may be to tell a young child how babies appear, it does not compare to the complexity of explaining how the entire universe began. Every human encompasses a natural desire to discover the truth, but it persists as one of the most controversial subjects. Some philosophical minds, Evolutionists or Darwinists, believe all substance started with a “Big Bang” and then began to evolve into…

Sharks don’t fossilize well because they’re from the class of chondrichthyes meaning their skeletons are made of cartilage, a flexible connective tissue. This is one of the reasons why there is a disagreement over when the first shark first existed. However, shark teeth do fossilize well and sharks produce thousands of teeth in a lifetime. The oldest shark teeth date back to the Devonian Period about 400 million years ago and were found in Europe. Shark scales also fossilize well.…

Daniel Huang Chapter 9 1. Mutations can be very negative in that it can cause cancer in somatic cells. However it is important to note that mutations will also lead to variability which is beneficial to us. Mutations in intergenic DNA affects regulations of protein products which is actually less detrimental than mutations in exons which code for the proteins. 2. Transition is the error that causes the base to change from a purine to purine or pyrimidine to pyrimidine. Transverses are base…

Introduction The emperor penguin, Aptenodytes forsteri, is most known for being the tallest and heaviest penguin in the world (Magnuson). The emperor penguin is a type of bird in the Spheniscidae family, which is the only family in the order and is home to many other aquatic birds (Magnuson). Emperor penguins live in the arctic tundra biome on the coast of Antarctica (Magnuson). Emperor penguins are carnivorous and will eat fish, krill and squid (Magnuson). A few of the emperor penguin’s…

In Scotland, 1997, a cell nucleus was transferred into an “empty” cell, and Dolly the sheep, the first mammal clone, was created. Dolly was not the end of cloning. Scientists debated creating a mammoth through a process known as de-extinction. They decided against cloning a dead mammoth not because it was hard, but because they would have nowhere to put the animal (nationalgeographic.com 1). Even humans could be cloned. But what will soon be possible is to enhance ourselves through genetic…

According to world famous paleontologist Jack Horner, “Dinosaurs may be extinct from the planet, but they are alive and well in our imaginations. “ Horner’s words illustrate the fact that even though dinosaurs may never come back, they still draw attention in present day. Millions of years ago, dinosaurs breathed, walked, and lived on the face of the Earth. Dinosaurs were the dominant land animals for 160 million years, making them one of the most successful groups of animals ever. They first…

CHAPTER 1 INTRODUCTION Since time immemorial microorganisms have played a significant role in the life of mankind owing to the production of the myriad enzymes and secondary compounds that they synthesize (Demain 1981). These micro organism live in a highly diverse environment ranging from hot springs to deep ocean sediments. In the hyper diverse environment where one can find a specialized and unique biological niche is the intracellular space between cells of higher plants acts as suite and…