Samples "Biology"

Biology

The coneflower is a large wildflower or garden perennial and can range from one foot to five feet tall depending on the species or sub-species (Explore Cornell, 2006). They have long, rigid, leaved stems that extend to a bare stems topped with a spiny cone of seeds surrounded by rays...

1043 words

Evolution is a process in which living things change over time to adapt to the characteristics of their environments. Lamarck and Darwin were pioneers in this field. Both of them believed that life forms change, that all life is related, and that more complex organisms such as human beings evolved...

799 words

Evolution can be understood as a slow process that brings about changes in animals as well as plants as well as its scientific piece. According to the theory of evolution as stated by Charles Darwin, life is assumed to have some sort of relationship. In addition to this, the theory...

619 words

It is very well known, though there are other points of view regarding this issue, that evolution is what made us what we are. We developed out of much simpler life forms, as well as other animals. But what is important to understand is how and why the evolutionary processes...

918 words

The Ordovician period was marked by an explosion of marine life. The continents were still connected in a large land mass, which had drifted towards the South Pole. The shallow seas allowed the evolution of many invertebrates including trilobites, brachiopods, and some early marine vertebrates. Cephalopods became a major predator...

656 words

IntroductionGenetic modification refers to the direct as well as deliberate manipulation of the genes of an organism. It is important to consider the aspect of direct manipulation in the definition because in the past, farmers were accustomed to indirectly modifying the genetic makeup of animals, for instance through interbreeding and...

1591 words

Background informationLight is one of the most important factors in seed germination. Apart from humidity and oxygen, light is known to ease seed dormancy and consequently facilitates the process of seed germination. However, this positive role is not always the case particularly in light independent seeds such as Delphinium. Although...

1310 words

In Guito’s article “Why is this $99 Home DNA Kit causing such an uproar?”, the author attempts to explain the reasoning behind the FDA stepping in to regulate 23andMe’s Home DNA Kits as medical device (2014). FDA had stepped in before with similar DNA mapping products due to the possibility...

637 words

Summary:This article by Pray (2008), published in Nature, highlights and explains the history of the discovery of DNA. It points out that, whilst we generally ascribe the discovery of DNA to James Watson and Francis Crick, the work they did was based on ideas going back to the 1860s. The...

632 words