why is genetic variation important to natural selection

why is genetic variation important to natural selection

What is genetic diversity? How is diversity created? In the process of inheritance, nucleotides (although not always whole genes) are shuffled and recombined to form new combinations that are different than the parents. Every individual is a unique combination of alleles from its parents (unless it has been clonally propagated from just one parent; see box on cloning). In addition, other events can create new variation in the DNA sequences. are changes to one or more nucleotides in the DNA sequence. They are caused by mutagens such as radiation (including ultraviolet radiation from the sun) or chemicals, or simply by mistakes during DNA replication. Mutations in somatic cells (nonreproductive cells) can cause problems, such as cancer, in an organism but are not heritable. Mutations in

 why do they say feed a cold starve a fever

why do they say feed a cold starve a fever

If you're not quite sure how this saying goes, you can relax: Starving is never the correct answer. When you eat a good-for-you, well-balanced diet, many other things fall in place that keep your body working well. Foods that are rich in nutrients help fight infections and may help prevent illness. TheyБre delicious, too! Get to know the best sources. These can help keep your immune system strong. Antioxidants -- which include beta carotene and vitamins C and E -- are essential nutrients and can help keep your immune system strong. They help protect your body on the inside. One way they do that is to target Бfree radicals,Б which are molecules that can harm things including cell membranes. By taking away their destructive power, antioxidants may help you stay healthy or bounce back faster

 why do they hate us fareed zakaria

why do they hate us fareed zakaria

But here's another way to think about this. In America, African-Americans make up, yet they comprise about 50% of homicide offenders, according to a. Now we understand -- I hope we understand -- that when we see a black man on the street, we cannot and must not treat him as a likely criminal. It would be dehumanizing, unfair and racist. In America, of all places, people should be treated as individuals and not as stereotypes from a racial, ethnic or religious group. ...

 why do veins pop out when working out

why do veins pop out when working out

Why do veins pop out when exercising? Do visible veins indicate a fit body? And more questions answered Why do veins become visible? are an integral part of the blood circulatory system. They are blood vessels that carry the oxygen-depleted blood towards the heart, with the exception of the pulmonary and umbilical veins (which carry oxygenated blood). Usually, present just below the flesh, veins generally have a tendency to pop out if the amount of fat the body contains is less. Butб are they the sign of fitness? Drб Amit Pankaj, Additional Director Б Orthopeadics and Joint Replacement at Fortis Hospital Shalimar Bagh weighs in. Why do veins pop out in the first place? Generally, fat tends to layer the body thereby preventing the veins from protruding. In some cases, during extreme

 why do people choose gluten free diets

why do people choose gluten free diets

I can t complete this list without including the fad component of the gluten-free diet, the source of the media backlash. Some people avoid gluten because they heard it was the cause of any number of ailments and they are trying to improve their health. If the diet is an impetus to cook more fresh food, limit refined carbohydrates and eat more fruits and vegetables, then it can indeed lead to improved health. However, many people who follow a gluten-free diet begin to miss gluten-containing favorites and start to rely on gluten-free processed foods with high sugar and fat and insufficient fiber and nutrients. Some gluten-free diet proponents state that gluten is universally harmful. However, there is no evidence that all humans should avoid gluten. People who chose a gluten-free diet to

 why do we like to hurt so much paramore

why do we like to hurt so much paramore

Well, I don't wanna be the blame, not anymore So take a seat, we're settling the final score (And why do we like to hurt so much? ) And why? All the possibilities Well, I was wrong Ladies and gentlemen, Taylor York! How am I supposed to feel when you're not here? I still try holding onto silly things, I never learn Oh, why? Now pain, make your way to me, to me Well if I, I ever start to think straight Let's start, start, (hey! ) Why do we like to hurt so much? ...

 why do we need to study operation management

why do we need to study operation management

The idea of doing an Operations Management course might not seem as an on obvious choice to many, but there are several benefits of doing just that. Firstly, operations management ensures that an organisation can remain competitive in a 21st century environment. This means that the creation and delivery of an organisation s goods or services are running as efficiently as they possibly can and fixing areas that are deemed inefficient. Secondly, organisations often find that they are faced with under-capacity utilisation while working overtime, that they have on-time delivery issues and that they have inventory buildup. By employing someone who has been trained in operations management, an organisation can save itself from a situation that could result in its decline. Thirdly, tuition that

 why operating system is called resource manager

why operating system is called resource manager

Operating System OS is an interface between a computer hardware and a user. It is a collection of software that manages computer hardware resources and provides Pcommon services for computer programs. Examples are Windows, Linux, MAC OS etc. Here we will learn Operating System as resource manager. Operating System as Resource Manager A computer system has many resources (hardware, software) and these resources are managed by OSP like Memory, File, PI/O device etc. Operating system is responsible to allocate resources to the specific programs to complete their task. When a computer has multiple users, the need for managing and protecting the resources (like memory, file, devices etc. )is even greater. Operating system keep track of who is using which resource, grant resource request and

 why do we measure temperature in fahrenheit

why do we measure temperature in fahrenheit

Grigull, Ulrich (1966). Fahrenheit, a Pioneer of Exact Thermometry. (The Proceedings of the 8th International Heat Transfer Conference, San Francisco, 1966, Vol. 1, pp. 918. ) Encyclopdia Britannica "Science Technology: Daniel Gabriel Fahrenheit" Kant, Horst (1984). B. G. Teubner. Retrieved. See the. The Kloosterkerk. Retrieved. ^. Sizes, Inc. 10 December 2006. Retrieved. Fahrenheit describes, in Latin, these numerical choices in the following paper: Fahrenheit, D. G. (1724). "Experimenta et Observationes de Congelatione aquae in vacuo factae". Philosophical Transactions of the Royal Society. 33 (381391): 7884. :. Heath, Jonathan. PhysLink. Retrieved. Burdge, Julia (10 January 2014). McGraw-Hill. p. P11. P. Retrieved. MacKowiak, Philip A. (1992). "A Critical Appraisal of 98. 6`F, the

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