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Describe in detail how insertion, deletion, and base substitution of nucleotides can have a significant impact on genes. Find three specific examples (actual gene mutations, not chromosome mutations) of ways in which a very small change in DNA can have a major impact on an organism, and describe each mutation in detail.
Why do agricultural researchers intentionally produce polyploid crop plants? Explain in detail what polyploidy means and discuss different types of polyploid plants. Give four specific detailed examples of actual commercial crops that are polyploid. In each case explain why polyploidy is advantageous. Also, indicate whether the polyploidy occurred naturally or describe how botanists created the new varieties. Why is it more common for polyploidy to occur in plants than in animals? Give examples of types of animals that have been found to exhibit polyploidy.
Name of tissues, characteristics, where they can be discovered in the body, functions, classification, composition of each type of tissues.
Both endocrine and nervous systems are major regulating systems of the body; though, nervous system has been compared to an airmail delivery system and endocrine system to the pony express. In brief explain this comparison.
Assume you are an ecologist studying the effects of acid precipitation on plant life. Explain an experiment you would perform in order to determine which plant species will be a useful indicator species for acid rain pollution.
What provides a shortest-term mechanism for preventing acid-base imbalances in the body? The longest-term mechanism? Describe each in specify.
Water is most dense and therefore heavier at 4 degrees Centigrade. At zero degrees Centigrade ice forms and can float on liquid water. Assume ice were most dense at zero degrees Centigrade. Select the best explanation of what would happen in aquatic ..
Determine hich of the following situations has the greatest potential for observer bias in an experimental study?
How, at what time the shoot tip touched the other plant's stem did the shoot switch from growing straight to growing in a spiral? Write down a hypothesis first.
An assured drug that is used to control high blood pressure stimulates K+ excretion in the kidney such that plasma [K+] decreases from a normal value of 5 mM to 2.5 mM. Intracellular [K+] is largely unaffected. What effect this drug will have on the ..
State which genes are dominant genes that get expressed over the other genes and which genes are recessive the genes that will not be expressed when the dominant gene is present.
Within the two groups defined by bone mass, smaller skeletons have bones with evidence of epiphyseal plates, but the larger skeletons have only a thin line where the epiphyseal plates should be. Give the age group and gender of the four individuals i..
Albinism is an autosomal recessive disease. Dimples are autosomal and dominant to no dimples. A normal woman with no dimples marries a man normal man with dimples.
Discuss how do eukaryotic microorganisms such as yeast (S.cerevisiae) or algae maintain genetic diversuty in the population?
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