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Genetic Engineering
Questions about the manipulation of an organisms genes in order to alter the morphological or chemical traits of the organism.
1,707 Questions
What characteristic is often genetically engineered in crop plants?
By far the characteristic that is most often genetically engineered into crop plants is resistance to herbicides, with engineering crops to produce a substance that kills insects into the plant itself a close second.
What will happen if Plasmolysed Spirogyra filament is placed in water?
bla bla bla.............................
How can scientists use plastids to transfer characteristics from one organism to another?
A plasmid is a circular double stranded DNA usually found in bacteria. Most of them do not have specific functions and altering them does not hamper the bacteria possesing them. A gene of interest can be annealed to this plasmid so as to make the concerned bacteria produce a particular product. Since the bacteria can now produce a new product, the plasmid has been used to alter the characteristics of the organism.
A professional who helps people understand their chances of having a child with a genetic disorder is called a geneticist.
What kind of diseases are the most common genetic diseases? (For example, those in which both parents may be carriers of the disease without knowing it because they don't actually have the disease.)
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Eggs are coaxed to mature in a culture dish. Each has a remnant egg cell called the polar body and cumulus cells from the ovary clinging to it. 2
While an egg is held still with a pipette, a needle is used to drill through the zona pellucida, removing a plug. 3
After ejecting the zona plug, the needle is inserted back in the egg through the hole to withdraw and discard the polar body and the egg's genetic material. 4
A cumulus cell from another egg is taken up into the needle. Cells called fibroblasts (or their nuclei) can also be used in this step. 5
The cumulus cell is injected deep into the egg that has been stripped of its genetic material. 6
The injected egg is exposed to a mixture of chemicals and growth factors designed to activate it to divide. 7
After roughly 24 hours, the activated egg begins dividing. The cells contain genetic material only from the injected cumulus cell. 8
By the fourth or fifth day, a hollow ball of roughly 100 cells has formed. It holds a clump of cells called the inner cell mass that contains stem cells. 9
The blastocyst is broken open, and the inner cell mass is grown in a culture dish to yield stem cells. 10
The stem cells, in turn, can be coaxed to grow into a variety of cells that might one day be injected into patients.
Chromosomes line up along in the equator not in homologous pairs?
Metaphase. What's the difference? Whether it's IN homologous or NOT, they're both Metaphase..... Stupid worksheet. I hate you group 3. :(
Do babies inherit their blood from their fathers only?
No, a baby can get either of the parents blood type.
Genetic material must be able to?
it must be able to produce complete working proteins, have the ability to adapt to changes, to reolicate faithfully and they must allow for evolutionary change
What is the number of nuclei in a zygote?
a zygote is a fertilized egg. one that has formed by the fusion of an egg cell and a sperm cell
What is a substance that scientists can produce through genetic engineering?
Insylin has been produced through genetic engineering.
Name the two organelles in a plant cell that contains their own genetic material and ribosomes?
mitochondria and plastids
What kind of genetic material do viruses have?
The genetic material that viruses have is RNA. Viruses are unable to truly carry out the processes associated with holding their own DNA.
To ramp up the DNA into a large enough amount to work with you would use polymerase chain reaction technique. PCR. By using the enzymes found in certain extremeophiles one alternately heats and cools the DNA solution with this extremeophile polymerase included and it ramps up the amount of DNA so you have a useful bit of DNA for insertion into a cloning vector.
Can you see all genetic variation?
No. Genotype is the combination of genes present in an organism. It consists of alleles whose visible characteristics is called phenotype. An organism's phenotype is visible and not the genotype as you just can't see a person and tell what kind of genes are present in the organism.
What is an example of cell reproduction?
Cells can reproduce through two types of processes. These processes are meiosis and mitosis. An example of cell reproduction can be seen when you get a scrap or a cut that scabs over. The new skin that forms in a cell reproduction.
What chemical is the genetic material made of?
The molecule which makes up the genetic material are series of chemicals called nitrogen bases held in a long winding helix. These nitrogen bases are used like letters or characters in a simple code.
Where would you find the genetic material in a cell?
A cells nucleus, mitochondria or a chloroplast may contain the DNA.
Does random alignment of chromosomes during Meiosis produce genetic variations?
In meiosis crossing over may occur at certain points on a chromatid. Crossing over is where variation occurs in allele combination. When a Zygote is formed alleles from mother and father cross over.. this is why you may have some features resembling your father and your mother... or grandma or grandpa... etc...
There can be mutations ( messups ) in mitosis but the actual process results in no genetic variation.
AP bio
What is an example of the benefits of genetic engineering?
Genetic engineering is often used in plants (especially plants that provide humans with food) so that the food/fruit/nut/product is bigger, better, and shinier. Genetic engineering can also change the DNA so that a plant can be immune to diseases (or at least fight them) and make them more resilient to heat/drought/cold.
