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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
How can genetic engineering produce tomatoes that are ripe when they reach consumers?
"Normally" tomatoes soften as they ripen, so they are usually picked green and shipped in that unripe state so they will stay firm. Just before delivery to the consumer these tomatoes are forced to ripen by gassing with the plant hormone ethylene gas. The consumer gets firm, ripe tomatoes (but less than fully sweet). These tomatoes will soften.
Using genetic engineering you can delete or disable the gene for the enzyme that causes the tomatoes to soften as they ripen, so they can be allowed to fully ripen on the vine (and become fully sweet) before they are picked and shipped. The consumer gets firm, ripe, and sweet tomatoes. These tomatoes will remain firm.
How do you make 20 percent solution of galactose?
dissolve 200 gr od pure galactose in streile water at room temprature while stirring
What is the difference between crossover and mutation in genetic algorithm?
mutation means change in genetic structure..where as crossover means interchanging the genetic structure of two or more chromosomes..
Why do some organisms not require a lot of parental care?
The less complex an organism is, the more of its survival practices can be "programmed" into it. Only creatures with lifestyles involving complex behaviours need parental care so they can survive long enough to learn them.
The body has 23 pairs of chromosomes. There are numbers 1-22, then the 23rd pair are the sex chromosomes. Females have two X chromosomes, making them XX, men have one X and one Y, making them XY.
The principle of a genetic disorder, let's call it "p", is that if someone has one normal, dominant chromosome "P" and one disease-causing, recessive chromosome "p", they are a carrier for the disease, but don't actually suffer from it (effectively the "P" overrides the "p").
Sex-linked disorders are carried on the X chromosome. If a woman inherits one normal X and one X with a recessive disease on it, she will just be a carrier, as she always gets two X's. Men on the other hand are XY, any disease they inherit on their X chromosome will present because they don't have another, potentially normal, X around to override the diseased one.
Hope this helps. :)
2 characteristics of living things are that they can and?
Living things have the capability to produce offspring to pass on their genes, and the ability to respond to changes in the environment they exist in.
What organic compounds store and transmit genetic information?
Nucleic acids are carbon compounds that store and transmit genetic information. They include:
Deoxyribonucleic acid (DNA)
Ribonucleic acid (messenger,transfer) (RNA)
proteins (in the case of prions)
carbon hydrates
How do you make and interpret Punnet squares for Autosomal and sex-linked traits?
The simplest type of Punnet square is a 2x2 square. You split up the alleles for mother and father and place them on the sides of the large square. Then you "drop" them to determine the possible genotypic and phenotypic ratios. For example, if the mom is Aa and the dad is Aa as well, then using the square, the possible combinations will be AA, 2 Aa, and aa. In this case, assuming A is the dominant allele, then there will be a 3:1 ratio of dominant phenotypes to recessive phenotypes. The genotype ratio will be 1:2:1, indicating 1 homozygous dominant, 2 heterozygous and 1 homozygous recessive genotypes.
This can be done for sex linked traits too. Use XX and XY for the parents and make the same box. For example, if it is an X linked recessive disorder and it is between XY and XX' then the possible outcomes are XX, XX', XY and X'Y. Here there is a 1/2 chance that the child, regardless of gender will be normal, 1/4 that the child (girl) will be normal but a carrier and 1/4 that the child (boy) will be affected.
How do you cut ice then put it back together?
Simply apply pressure to the two pieces that you just cut and they will fuse back together.
== Answer
== You can cut ice with a saw, and as long as the two edges are just slightly melted, if you put it back together and re-freeze, it will stay together!
What is the basic unit of heredity?
The basic unit of heredity is the gene, which is a segment of DNA that contains the instructions for a particular trait or characteristic. Genes are passed from parents to offspring and determine an individual's genetic makeup.
Why are only 9 types of aneuploids known in newborns?
Most types of aneuploids are lethal early in development so therfore only 9 are passed to newborns
What is the purpose of genetic mapping?
Genetic mapping is mapping genes to a specific location on a chromosome. therefore the purpose is that it helps to tell where on the chromosome a mutation is. For example if scientists find were on a chromosome a gene for a certain mutation, they can conduct gene therapy to replace it with a normal version of that gene. Basically it just tells scientists the location of a mutation so they can fix it more efficiently.
