Which best describes genetic engineering?
Genetic engineering is the process of using recombinant DNA (rDNA) technology to alter the genetic makeup of an organism. Traditionally, humans have manipulated genomes indirectly by controlling breeding and selecting offspring with desired traits.
What is a transgenic organism apex?
transgenic. an organism that contains the genetic material of more than one species.
Which is a mechanical vector that injects recombinant DNA directly into the nucleus of a host cell?
Which is a mechanical vector that injects recombinant DNA directly into the nucleus of a host cell? gene gun micropipette bacterial plasmid viral phage.
Which best describes the first step in genetic engineering?
Genetic engineering involves series of steps, however, the very first step is that of DNA EXTRACTION. The fragments of DNA that have desired genes are isolated from the involved organism. The extracted DNA called the recombinant DNA, which is inserted into the host genome.
What genetically engineered hormone is used?
In medicine, genetic engineering has been used to mass-produce insulin, human growth hormones, follistim (for treating infertility), human albumin, monoclonal antibodies, antihemophilic factors, vaccines, and many other drugs. In research, organisms are genetically engineered to discover the functions of certain genes.
Which best explains why DNA technology is important for disease prevention?
Which best explains why DNA technology is important for disease prevention? It can help detect if a person is prone to certain diseases.
Which process is the opposite of inbreeding?
What is an advantage of using DNA technology?
Recombinant DNA technology, also called “genetic engineering,” has many benefits, such as the ability to improve health and improve the quality of food. But there are downsides as well, such as the potential for using personal genetic information without consent.
Which is the least likely reason that pigs?
The least likely reason that pigs have been chosen as donors for humans in the process of xenotransplantation is the same DNA as humans. Xenotransplantation is the process of transplanting organs from one species to another.
Do pigs have the same DNA as humans?
“Everything matches up perfectly. The pig is genetically very close to humans.” Schook explained that when we look at a pig or a human, we can see the difference instantly. “But, in the biological sense, animals aren’t that much different from one another — at least not as different as they appear,” he said.
What consequence are scientists?
The correct answer is cancer. Cancer is the consequence that scientists are concerned that is could possibly result from the use of genetically engineered growth hormones in dairy products. Cancer involves abnormal cell growth that is potentially be spreading in the body.
Which was an advantage of using DDT?
Answer Expert Verified. The major advantage of DDT at that time when it was used as a pesticide is that the DDT was very effective as a pesticide and it killed almost all the pests on which it was sprayed. It killed all the insect and pests that was present in the united states at that time.
Is DDT used today?
Dichlorodiphenyltrichloroethane (DDT) is an insecticide used in agriculture. The United States banned the use of DDT in 1972, but some countries still use the chemical. It is still in use outside the United States for the control of mosquitoes that spread malaria.
What problems did DDT cause?
Human health effects from DDT at low environmental doses are unknown. Following exposure to high doses, human symptoms can include vomiting, tremors or shakiness, and seizures. Laboratory animal studies showed effects on the liver and reproduction. DDT is considered a possible human carcinogen.
Which countries have banned DDT?
The countries that have banned DDT include Argentina, Australia, Bulgaria, Canada, Colombia,Cyprus, Ethiopia, Finland, Hong Kong, Japan, Lebanon, Mozambique, Norway, Switzerland, and the USA.
Why is DDT still an environmental concern today?
The reason why DDT was so widely used was because it is effective, relatively inexpensive to manufacture, and lasts a long time in the environment (2). Is DDT still used? DDT was canceled because it persists in the environment, accumulates in fatty tissues, and can cause adverse health effects on wildlife (4).
Why did they spray kids with DDT?
Children can be seen having the pesticide applied to their heads and inside their clothing during the clip. Allied forces used the chemical to stop the spread of lice-borne typhus which was prevalent in Italy between 1943 and 1945.
Is DDT a biopesticide?
DDT (dichloro-diphenyl-trichloroethane), a modern chemical insecticide, was extensively used in protection of crops, forests and controlling insect-vectors of human diseases. There are an estimated 67,000 pest species that damage agricultural crops .
Why did DDT get banned?
In 1972, EPA issued a cancellation order for DDT based on its adverse environmental effects, such as those to wildlife, as well as its potential human health risks. In addition, some animals exposed to DDT in studies developed liver tumors.
Is DDT still used in India?
DDT is banned for agricultural use in India, however, it continues to be used for fumigation against mosquitoes in several places in India, including Hyderabad. A partial ban on DDT was introduced in 2008 wherein it could not be used for agricultural purposes.
Is DDT a fertilizer?
DDT is a synthetic insecticide of very high contact toxicity which, until recently, was used on a global scale. However, DDT was a truly important development in its time and a major weapon in the control of malaria. Dr. Muller was awarded the Nobel Prize for Medicine in 1948.
Which is true for DDT?
DDT (dichloro diphenyl trichloroethane) is a non- biodegradable pesticide. It is persistent, fat soluble and shows biomagnification. So they are more harmful to higher tropic level organisms.
How long does DDT stay in the soil?
The half-life of DDT in soil can vary between 2 and 15 years, depending on the soil acidity and temperature. that only small amounts will move though soil into groundwater.
What type of pollutant is DDT?
DDT is a persistent organic pollutant that is readily adsorbed to soils and sediments, which can act both as sinks and as long-term sources of exposure affecting organisms. Depending on conditions, its soil half-life can range from 22 days to 30 years.
How did DDT affect birds?
Populations of bald eagles and other birds crashed when DDT thinned their eggs, killing their embryos. The pesticide, known for accumulating in food webs and persisting in soil and river sediment, was banned in the United States in 1972.
Does DDT cause air pollution?
-Some DDT may evaporate from soil and enter the air, and some may be broken down by the sun or by microorganisms. It became infamous for its environmental impacts i.e. it caused air, water and soil pollution.
Is DDT primary pollutant?
Primary pollutants persist in the form they are released in the environment. Secondary pollutants are formed by reaction amongst the primary pollutants. DDT is a primary pollutant.
What are the 5 primary pollutants?
Types of primary pollutants include:
- Nitrogen oxides (NOx)
- Carbon monoxide (CO)
- Volatile organic compounds (VOCs)
- Sulfur oxides (SOx)
- Particulate matter (PM)
- and more.