_____ Plelotropy A. This is associated with an improper separation of dyads and
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_____ Plelotropy A. This is associated with an improper separation of dyads and can result in aneuplodies. _____ Interference B. When dealing with a gene that has multiple phenotypic affects as In the inheritance associated with Cystic Fibrosis or Sickle Cell Anemia. _____ holandric C. This is the term for a characteristic that has more than one gene affecting the phenotype. _____ incomplete dominance D. A general term used in association with the Inheritance of genes found in the non- homologous region of the Y-chromosome. _____ nondisjunction E. This term is associated with heterozygous individuals that have a phenotype intermediate between the homozygous phenptypes. F_(AB). An analysis of the chromosomal content of an individual with associated DNA staining and distinctive banding techniques. G_(AC). This is associated with disruptions in the expected number of crossover events that normally occur between adjacent linked genes. Please match the individual(s) with the statement that is associated with their research. A.) E. Chargaff B.) Gregor Mendel C.) F. Griffith D.) T.H Morgan E.) R. & T. Okazaki F. (AB) C. MacLeod G. (AC) F. Stahl H. (AD) A. Sturtevant I. (AE) A. Hershey J. (BC) F. Crick K. (BD) R. Franklin _____ While working in concert with a co-worker, utilizing cesium gradient centrifugation and radioactive labeling, this person was able to determine that DNA replication Is semi-conservative. _____ Key 1950's investigations into the three-dimensional structure of the DNA molecule utilizing X-ray crystallography. _____ While carrying out research with Drosophila melanooaster and the sex-linked characteristic of White eyes he and his coworkers were able to demonstrate the chromosomal theory of inheritance. _____ Clearly established the concepts of segregation, unit character and dominance in the mid 19th century. _____ While investigating the organic molecules responsible for heredity this researcher used bacteria infecting viruses that had been manipulated to possess proteins and DNA with different radioactive labels.Explanation / Answer
16. B. When one gene affects two or more unrelated phenotypic traits, known as pleotropy
17. G. When one cross over interferes with another cross over, known as interference
18. D. Inheritance of genes on the Y chromosome. Because only males normally have Y chromosomes, Y-linked genes can only be transmitted from father to son. This condition is known as holandric inheritance
19. E. one allele for a specific trait is not completely expressed over its paired allele. This results in a third intermediate phenotype
20. A. The failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division. It creates aneuploidies.
21. G
22. K. Watson and Crick used stick-and-ball models to test their ideas on the possible structure of DNA. Rosalind Franklin and Maurice Wilkins, used X-ray diffraction to understand the physical structure of the DNA molecule.
23. D
24. B
25. I
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