yndrome (AA + XO) and Klinfelter syndrome (AA + XXY) are formed by the fusion of
ID: 255717 • Letter: Y
Question
yndrome (AA + XO) and Klinfelter syndrome (AA + XXY) are formed by the fusion of a normal balanced spe th rm with an egg that is unbalanced (aneuploid) for e X chromosome. The production of such aneuploid eggs could be the result of a. non-disjunction of the sex chromosomes during the anaphase of either meiosis I or meiosis II b. lagging behind of one of the sex chromosomes after separation in anaphase resulting in it not being included in any of the daughter nuclei. c. both "a" and "b" are possible. d. none of the above answers is correct. 47. A triploid organism (3x) usually results from a. the union of a haploid and a diploid gamete b. unequal disjunction during embryogenesis c. propagation of fused cell lines d. fusion of three gametes simultaneously 48. In Drosophila, a gynandomorph, which is composed of equal parts male and female tissue, results from: a. an XX female losing one X chromosome during the first mitotic division after fertilization b. an egg carrying an X chromosome fertilized by a Y-carrying sperm c. a normal egg fertilized by both an X-carrying sperm and a Y-carrying sperm d. the fusion of a female embryo with a male embryo tatooExplanation / Answer
1. Both a and b ate possible
2. The union of haploid and diploid gamete
3. Normal egg fertilized by both X carrying sperm and y carting sperm.
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