<span>well there are many health effects you can talk about... vomiting, diarrhea, various other forms of sickness often prokaryotes or bacteria will cause the contamination... this is
normally taken care of in places that have a water treatment facility to
filter out all that nasty stuff they can spread in various ways from one person to the next but one of
the most common is the fecal-oral route, meaning that the disease can be
spread is someone ingests something that has somehow come into contact
with the feces of a person who has the disease </span>
The part of Earth that supports life is called as the earth's Crust .
Answer:
organogenesis
Explanation:
Organogenesis is defined as a process in which the three germ layers differentiate further to form several organs.
The embryonic stem cell is responsible for determining the ultimate cell type. During this process, neural system is formed and several morphological changes occur. The neural system further differentiates and develops to form neural tube and ultimately converts into brain and spinal cord. While folds and dense clusters are formed in the embryo that later form organs.
The key factor that influences BAC(blood alcohol concentration) would be <span>all of the above.
Height and body weight would increase the total amount of your body volume. The more your blood volume, the less alcohol concentration will be. Consuming food also delay alcohol absorption and make alcohol peak concentration less high.
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Answer:
Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.
Explanation:
Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.
The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one. The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants. After crossing over, homologous chromosomes get separated again.
On the equatorial plane, homologous paired together, randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating. Chromosomes of the homologous pair arrange to face any of the poles to migrate forward to it. Each of the chromosomes has two possibilities for orientation at the plane. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. The order in the equatorial plane is what introduces variation into the gametes, being almost impossible for two gametes to have the same genetic charge.
Independent assortment occurs when the alleles from two or more different genes distribute in gametes independently from each other. In other words, a gamete receives an allele from a gene that does not depend on nor influence the allele of another gene in the same gamete. This can only be applied to independent genes. An organism gets only one of the members of the chromatids pair of each parent.
