Gastric ulcer is nothing more than an injury to the tissue lining the stomach. It may also be called peptic ulcer or stomach ulcer.
The most common cause of ulcer formation is the proliferation of a bacterium called<em> Helicobacter pylori. </em>There are other less common factors such as diet, overuse of drugs, smoking, stress and alcohol.
The best way to prevent an ulcer contraction is to maintain hygiene habits to prevent <em>Helicobacter pylori</em> infection. It is also good to avoid excessive consumption of alcohol, smoking and medications such as pain killers.
For a recessive trait to be expressed in a generation of offspring, an individual must be Homozygous for the allele
Ok here I go The answer is A
Answer:
Fossils are the greatest and simplest evidence of the presence of the organisms that existed many years ago.
Deoxyribo Nucleic Acid (DNA) is called as “coil of life.” According to the Darwin’s theory about 8 percent of human genome is made up from viral DNA which a person has accumulated through infections and diseases.
The case studies helps in figuring out the total evolution of species and organisms.
<u>Explanation:
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<em>Fossil Records
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But now Fossils are the feces and the footprints of the organisms which confirm the presence of an organism which are now extinct or rare to find.
<em>DNA evidence
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DNA of an organism has sequences which mutate over a period of time and results in changes in organism’s genetics which later on evolve into new specie. Hence, the DNAs help to find the ancestors of the organism and also figure out the organism specifically related to. The process of study of evolution is known as Phylogenetics.
<em>Case Studies
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The finch of Galapagos of Darwin’s is one of such example of evolution. The Galapagos Island helped in finding out the evolution occurred when the finches were secluded due to the geographical barriers.
In fungi, the cell wall contains a polysaccharide called chitin. Hope this helped!