Answer questions in reference to the five items.? is a post from: Nature Technology Corporation

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Need help with GENETICS! please? is a post from: Nature Technology Corporation

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Hello I am Mason Wilson I go to River Valley High School.
My speech is about animal genetics and I’m going to be teaching you about animal genetics, how it works, what the selective process is, and how it is
beneficial to you and the producer of the animal product. And also about
genetic engineering and what that does and how it helps the
farmers make better and more efficient meat.
Did you know that what an animal eats when it is young has a lot
of influence on what the animal will look like when it is older?
Genetics is the science of heredity and variation in living
an organism which means animal genetics is the science of heredity and variation in animals.
The genotype is the actual genetic make up of an animal. The phenotype is here because of the genotype. The phenotype is the actual appearance of the animal such as size, color, shape, and other characteristics which help the breeder choose which animal mates with which to produce more valuable offspring. An example of the phenotype is the color pigmentation in a dog’s coat. If the dog’s mother has brown fur, and the father has white the color of the dog will most likely be brown because it is the dominant color trait.
When a breeder chooses what animal mates with which animal it’s called selective breeding. Breeders of animals in today’s world are hoping to produce offspring that will possess ideal characteristics making the animal more valuable and some of these characteristics are resistance to disease, high growth rate and many other characteristics that will benefit the offspring. For example if a cow farmer wants to make cows that have more muscle or meat he would pick a bull that has the traits to bring up these specific characteristics out in the animal and he would breed it with a cow that also might have those genes.
Breeders have learned to manipulate the phenotype of offspring by selective breeding in animals. This is normally done by breeding two animals of the same species that possess dominant alleles for ideal traits, such as long life in one animal that is bred with another animal possessing gene for high resistance to disease. Since both these animals have dominant traits for these ideal characteristics, when they are bred they will produce at least some offspring that will show these ideal characteristics. Breeders watch which characteristics are held by each animal so when the breeding season begins, they can selectively breed the animals to produce more valuable qualities in the offspring.
The process of selecting parents is called artificial selection or selective breeding. It allows breeders to increase the quality of the animals that they breed, such as increasing milk yield from cows by continuously breeding selected cows with one another to produce a hybrid. A hybrid is the offspring resulting from cross-breeding of different animals. For example have you ever heard of a liger? A liger is created when a male lion and a female tiger creating a hybrid that is known as a liger. Something that you’re probably more familiar with is a mule. A mule is a hybrid that is created when a female horse and a male donkey are bred together. Some more examples are beefalo or cattalo created by American bison and cows, leopons are hybrids created by leopard and a lion.
Genetic engineering may be one of the greatest breakthroughs in recent history, and governments have produced legislation to control what sort of experiments is done involving genetic engineering. Genetic engineering is the direct manipulation of an organism’s genes. An example would be that a farmer can create better dairy cow milk by injecting the cow with insulin. Genetic engineering can be done in 5 steps which are:
Isolation of the genes of interest
Insertion of the genes into a transfer vector transfer of the vector to the organism to be modified transformation of the cells of the organism Selection of the genetically modified organism (GMO) from those that have not been successfully modified.
Genetic engineering is used to cure diseases one of these methods is the gene knockout experiment where scientists disable one or more genes in the animal and then they insert a disease and see how the animal reacts to the disease with those genes missing from the animal.
Some advantages of genetic engineering are that Disease could be prevented by animals that are genetically prone to certain hereditary diseases, and preparing for the inevitable. Also, infectious diseases can be treated by implanting genes that code for antiviral proteins specific to each antigen. Animals can be made to show ideal characteristics making them more valuable. Genetic Engineering could increase genetic diversity, and produce more variant alleles which could also be crossed over and implanted into other species. Some disadvantages are that Genetic engineering borderlines on many moral issues, particularly involving religion, which questions whether man,

Final exam speech please help make it better and longer? is a post from: Nature Technology Corporation

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At the moment, I am working on a project, but I cannot seem to understand something. In order to create a organism with a foreign DNA sequence, there is a method that must be followed. Correct? Example, if I wanted to grow antlers on a rabbit, I’d take the gene for antlers from a deer and place it into the rabbit’s DNA. Is this the correct method?

1) PCR
2) RFLP
3) Edman Method
4) Blotting
5) DNA Extraction
6) Plasmids
7) Vectors

If this is the correct sequence, can you please explain why each step is present? I understand that the PCR step is their to make copies of the DNA, but what about the RFLP and the others?

Thanks so much!

Can someone explain this to me? Transgenic Organism? is a post from: Nature Technology Corporation

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1) What is actually measured in DNA microarray experiments that reflects transcription?

2) If a mutation is lethal, what is one way of studying the phenotype produced by the gene in a surviving organism?

3) What enzymes are used to insert new DNA pieces into bacterial or viral vectors?
Ok thanks for the 1 and 3. Ill look on the internet for info on number 2.

3 basic HW questions – Molecular Biology – Genetic based? is a post from: Nature Technology Corporation

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At the moment, I am working on a project, but I cannot seem to understand something. In order to create a organism with a foreign DNA sequence, there is a method that must be followed. Correct? Example, if I wanted to grow antlers on a rabbit, I’d take the gene for antlers from a deer and place it into the rabbit’s DNA. Is this the correct method?

1) PCR
2) RFLP
3) Edman Method
4) Blotting
5) DNA Extraction
6) Plasmids
7) Vectors

If this is the correct sequence, can you please explain why each step is present? I understand that the PCR step is their to make copies of the DNA, but what about the RFLP and the others?

Thanks so much!

Can someone explain this to me? Transgenic Organism.? is a post from: Nature Technology Corporation

Technorati Tags: correct sequence, deer, dna extraction, dna sequence, hey everyone, organism, pcr, rabbit, rflp, vectors

2. What is a genome?
a. all the cells produced during meiosis.
b. all the plasmids produced from inserting DNA into a cell.
c. all the DNA in one cell of an organism
d. all the karyotypes in a cell.

3. In an attempt to produce a potato that tastes good and also resists disease, plant breeders crossed a potato variety that tastes good with a variety that resists disease. This technique is an example of _________.
a. genetic engineering.
b. inbreeding.
c. hybridization.
d. cloning

4. A Carrier is a person who has ________.
a. one recessive and one dominant allele for a trait.
b. two recessive alleles for a trait
c. two dominant alleles for a trait.
d. more than two alleles for a trait.

5. What must occur for a girl to be colorblind?
a. Each parent must be colorblind.
b. Each parent must have the dominant allele for colorblindness.
c. Each parent must have the recessive allele for colorblindness.
d. Each parent must have two codominant alleles for colorblindness.

Any help with my biology please? is a post from: Nature Technology Corporation

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all the cells produced during meiosis
all the plasmids produced from inserting DNA into a cell
all the DNA in one cell of an organism
all the karyotypes in a cell

2. What controls variations in skin color among humans?

a person’s diet
many genes
multiple alleles of a single gene
two alleles of a single gene

3. The chemicals that ooze from a fungus’ hyphae into its food source __________

absorb the food.
break down the food.
harden the food.
nourish the food source.

4. Which structures allow sarcodines such as amoebas to move?

cilia
contractile vacuoles
flagella
pseudopods

5. Genetic disorders are caused by __________

pedigrees.
DNA mutations or changes in chromosomes.
dominant alleles only.
recessive alleles only.

/

anyone help me with 5 biology questions? is a post from: Nature Technology Corporation

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Multiple choice

What is a genome? a. all the cells produced during meisos, b. all the plasmids from splicing DNA in one cell of an organism, d. all the karyotypes in a cell

How does a geneticist use pedigrees? a. to create genetic crosses b.to replicate identical strings of DNA, c.to prove that that sex-linked traits are caused by dominant alleles, d.to trace the inheritance of traits over generation sof families

Why does height in humans have such a wide variety of phenotypes? a. Height is controlled by at least four genes, b.The gene for height has only two alleles, c.Height is controlled by sex-linked genes, d.Height is controlled by recessive allele

What controls variations in skin color among humans? a. a person’s diet, b.at least three genes, c.multiple alleles of a single gene, d. two alleles of a single gene.

I will add more when i come back

Science Question? is a post from: Nature Technology Corporation

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1. What information is critical to the success of PCR itself?
The DNA sequence of the ends of the DNA to be amplified must be known.
The sequence of restriction enzyme recognition sites in the DNA to be amplified and in the plasmid where the amplified DNA fragment will be cloned must be known. ******
The sequence of restriction enzyme recognition sites in the DNA to be amplified must be known.
The complete DNA sequence of the DNA to be amplified must be known.

2. The general term for the manipulation of organisms to create products or cure disease is ________.
biotechnology.
gene cloning.
recombinant DNA technology. ****
plasmid-mediated transformation

3. Which of the following is a gene library?
a collection of plasmids cut by a restriction enzyme
a collection of genes that have been sequenced from a particular organism
a collection of DNAs cut by a restriction enzyme
a collection of PCR-amplified DNAs
a collection of different DNA fragments ligated into plasmids ************

4. How does a gene library differ from a gene clone?
A gene library is a much shorter DNA sequence than a gene clone.
A gene library is sequence information stored in a computerized database; a gene clone is an actual sequence of DNA.
A gene library contains many different cloned DNA sequences; a gene clone contains one type of DNA sequence.
A gene library is a much longer DNA sequence than a gene clone. ***
A gene library contains one type of cloned DNA sequence; a gene
clone contains many different DNA sequences.**************

5. In establishing paternity by DNA fingerprinting, what proportion of microsatellite repeat alleles in a child come from the father?
1/4
none
1/2
3/4
all ****

BIOLOGY HELP!!!!!!!!!? is a post from: Nature Technology Corporation

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