24. In plants, the Calvin Cycle functions to: A. Produce oxygen B. Reduce carbon

Question

24. In plants, the Calvin Cycle functions to: A. Produce oxygen B. Reduce carbon dioxide to sugar C. Generate electrons D. Capture sun energy 25. Genetic markers are sequences of DNA that vary from person to person and can used to identify individuals. One such marker is short tandem repeats (STR). STR analysis is used in forensic science to create: be A. DNA fingerprint B. Restriction Fragment Length Polymorphism C. Genomics D. Clones (RFLP) 26. A female with a dominant phenotype but unknown genotype (A?) is test crossed. of the offspring have the dominant trait. The female is most likely: A. Aa C. Recessive D. Aa, where the allele is sex-linked 27. A natural part of bacterial defense against viruses, these chemicals are utilized b humans to cut DNA into pieces in order to transfer it from organism to organism, or test for identifiable sequences in DNA fingerprinting: A. Restriction enzyme B. Antibodies C. DNA ligase D. Reverse transcriptase 28. In sexually-reproducing organisms, offspring vary due to: A. Crossing over during synapsis B. Independent assortment during meiosis C. Fertilization D. All of the above

Explanation / Answer

24 - The correct answer is option B that is Calvin cycle is used to reduce carbon dioxide to sugar.

These sugar includes glucose made using Co2 and water.

25 - The correct answer is option A that is dna fingerprinting. As all the individuals have different number of repeats will make different size of bands and individuals can be distinguished.

26 - The outcome of the F2 can not be seen in the question.

If all of the offsprings have dominant trait then the genotype of female is AA.

If three of the four offspring has dominant trait then the genotype of female is Aa.

27 - The correct answer is option A that is restriction enzymes.

Restriction enzymes cleave at specific sequences and sequences can be identified if the restriction enzyme site is not present.

28 - The correct answer is option D that is all of the above.

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