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Biology 4 tutor questions.




Question;#1 Examine the cross between a black-coated Labrador and a chocolate-coated Labrador.Using correct biological terms explain how 50% of the offspring have the probability ofbeing chocolate-coated.#2 Deoxyribonucleic acid or DNA is the chemical basis of inheritance. It is composed ofnucleotides, has a double helix structure and relies on ribonucleic acid or RNA to get itsinformation out to the cell. But the RNA has only one strand while DNA has two.Using evidence from MasteringBiology and other sources, explain why you think DNAhas two strands while RNA has one strand. Relate this to how your own DNA gives youcertain characteristics that other members of your family share or dont share.#3 Name three types of things in todays world might cause a breakdown in the controlsystem that regulates cell division? Explain how this control system is modified by thesethree things in such a way that cancer results?#4 During reproduction, genes are transferred from the parent organisms to the offspring,whether they are tomato seeds or baby walruses. Scientists have learned how to isolategenes and insert them into cells without using the parents. Genes may now be transferredfrom one organism to another by artificial means. These genes are then incorporated intothe new cells and direct the life of those cells.Choose an organism and describe one of the potential risks or benefits of the currentgenetic engineering technology that involves that organism. The organism may bebacteria, plant or animal, but it must be the result of genetic engineering.Post your primary response and support your statements with references. Your primarypost should be at least 125 words or so. Read any postings already provided by yourinstructor or fellow students. Read and respond to the suggestions made by two of yourclassmates. Remember to read the feedback to your own major postings and reply to itthroughout the module.Be sure to cite your references in American Psychological Association (APA) style in-textand include the full APA style reference information at the end of the document. If youneed help finding appropriate sources, review the library tutorials and/or consult with one2[Type text][Type text][Type text]of the Excelsior library staff. There are excellent resources available through the writingcenter if you need guidance about APA citation.


Paper#62560 | Written in 18-Jul-2015

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