Question 11 Listen An XYY individual could result from non-disjunction in a) Meiosis 1 of that individual's Mother b) Meiosis 2 of that individual's father c) Meiosis 2 of that individual's mother d) Meiosis 1 of that individual's father
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Genetics Question 11
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- QUESTION 8 Match the stages of mitotic cell division to the descriptions of those stages. ]chromosomes attach to spindle fibers across the middle of the cell chromosomes are not yet duplicated so chromosomes only look like a line, Jonly one pair of centrioles in cell A. Cytokinesis cell membrane is pinching in forming a peanut-shaped cell, daughter chromosomes reach the poles and new nuclear membranes are forming around them B. Anaphase C. Telophase D. Early Interphase the nuclear membrane is breaking down, chromosomes are condensing, centrioles are building microtubule "highways" (spindle fibers) E. Prophase chromosomes are duplicated so chromosomes look like an "X", two pairs of centrioles and double the amount of organelles fill the cell F. Late Interphase cell is dividing into two identical cells G. Metaphase daughter chromosomes are beginning their migration to the poles on spindle fibersQuestion 2 "Independent assortment" refers to assortment of sister chromosomes at the metaphase plate in meiosis I assortment of sister chromatids at the metaphase plate in meiosis I assortment of sister chromatids at the metaphase plate in meiosis II assortment of homologous chromosomes at the metaphase plate in meiosis II assortment of homologous chromosomes at the metaphase plate in meiosis I A assortment of sister chromosomes at the metaphase plate in meiosis IIQUESTION 34 What would be predicted to be the most common cause of chromosome translocations in Meiosis? A. Incorrect resolution of chiasmata in Meiosis II B. single point mutations during Meiosis II C. nondisjunction events resulting from incorrect resolution of chiasmata in Meiosis I D. improper cleavage of the cohesion complex
- Question 4 Review fertilization of life cycle. The somatic cells of human bodies are O diploid (2N) O haploid (N)Question #2: Recombination is a process that creates genetic diversity during meiosis. Below is the average amount of recombination (y-axis) in several species of eukaryotes (shown on the x). SAR=Stramenopiles-Alveolates-Rhizaria Eukaryote log recombination rate (cM/MI SAR fungi other animals unseg, worms insects www molluses fishes crustaceans amphibians + reptile DO aves mammals other plants gnoliids magnolii basal eudicots superrosids superasterids lilioids+alismatids commelinids conifers a) What do you notice about the amounts of recombination in the various species? b) This paper found that recombination is positively correlated with gene density (number of genes per kb of chromosome) and negatively correlated with the density of repetitive elements (areas of the genome that are repetitive and do not encode genes). Why might this be the case? c) A cross was made between two individuals (AaBbxAaBb) where A codes for red eyes, a codes for blue eyes, B codes for curly wings, and b…Question 6 Albinism is caused by an autosomal recessive allele that interferes with skin pigmentation in mammals. Two normally pigmented human parents already have an albino boy. They plan to continue to have children until they get a girl. Some or all of this information is important for each of the questions below. a) What is the probability that their next child (currently unborn) will be a girl with albinism? Explain your reasoning. b) What is the probability their first female child will be albino? Explain your reasoning. c) The answer to part (b) is different (and, yes, the answer is different) from the answer to part (a). Explain why. (Hint: it has something to do with the underlined words.)
- Question 42 The term "clone" refers to any genetically identical population. A True B) FalseWhat is the process to complete this question. Do you create a punnet square?Question 3 Anna (who produces eggs) and Syed (who produces sperm), have a child with Down's syndrome that results from trisomy of chromosome 21. Using a microsatellite sequence on chromosome 21, you run a gel. The gel imaged is attached; darker bands indicate signals of twice the intensity. If a nondisjunction event occurred in Anna during meiosis I, which lane (A, B, C, D) best fits the genotype of their child? Explain your choice, clearly identifying why that lane is correct and why the other lanes are incorrect. Assume no recombination.
- QUESTION 5 Assume that the diploid number of a certain species is four chromosomes, two large and two small (2n=4). a) Of the following figures, which represents a 3n (triploid) cell in mitotic metaphase? XX XX XX A B D b) For each of the wrong answers from part (a) above, explain briefly why it cannot represent a triploid cell in mitotic metaphase. X x x XQuestion 10 1 II 1 2 3 II 1 The genetically inherited disease shown in the picture above is: C Dominant Recessive Codominant C PedigreeQUESTION 10 Click directly on the chromosomal location named 2q22. You can click on either chromatid, but make sure you are clicking directly on the precise location. 3. 3 4 1 3 4 IMII ক - D