Which of the following alterations of chromosome structure is less likely to produce negative health effects? Chromosome inversion O Chromosome duplication O Chromosome deletion O Chromosome translocation
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- Question 39 The Philadelphia chromosome has which chromosomal abnormality? O A large pericentric inversion O A large deletion of the entire q arm O A large paracentric inversion O A reciprocal translocationQUESTION 4 After isomerization and resolution of a Holliday Junction, the resulting chromosomes are: O Unchanged from the original chromosome. O Nonrecombinant chromosomes with a heteroduplex region. Recombinant chromosomes with a heteroduplex region. O Recombinant chromosomes without a heteroduplex region. O B and C are correct.QUESTION 13 Assume that a diploid cell (2N=8) contains 4 pairs of chromosomes (3 pairs of autosomes and 1 pair of sex chromosomes) designated as 1m, 1p, 2m, 2p. 3m, 3p, Xm, and Xp where "m" stands for maternal origin and "p" stands for paternal origin. If nondisiunction for the Xm chromosome ocurred in meiosis I, what will be a likely chromosomal composition of the resulting 2 daughter cells at the end of this cycle? O 1m, 2p, 3p, Xm, Xp AND 1p, 2m, 3m, Xm, Xp O 1m, 2p, 3p, Xm, Xp AND 1р, 2m, 3m O im, 1m, 2p, 2p, 3p, 3p, Xm, Xm, Xp, Xp AND 1p, 1p, 2m, 2m, 3m, 3m, Xm, Xm, Xp, Xp O 1m, 1m, 2p, 2p, 3p, 3p, Xm, Xm, Xp, Xp AND 1p, 1p, 2m, 2m, 3m, 3m
- Question 38 Which of the following are associated with dynamic mutations? Genomic imprinting O Trinucleotide repeat diseases O Maternal effect diseases O Mitochondrial diseases O X-chromosome inactivationHuman Somatic (non reproductive) cells have 46 chromosomes organized into 23 pairs. A human somatic cell goes into mitosis, how many chromosomes does each resultant daughter cell have?QUESTION 2 Variable expression of the MERRF syndrome arises from recombination between nuclear and mtDNA O homoplasmic cells mitotic segregation nuclear genes environmental factors
- Question 41 Which of the following statements does BEST compare the processes of mitosis and meiosis? O Mitosis involves two division cycles and results in haploid gametes, while meiosis consists of one division cycle and results in a diploid daughter cell O Mitosis involves two division cycles and results in diploid daughter cells, while meiosis consists of one division cycle and results in haploid gametes. O Mitosis involves one division cycle and results in diploid daughter cells, while meiosis consists of tavo division cycles and results in haploid gametes. O Mitosis involves one division cycle and results in haploid gametes, while meiosis consists of two division cycles and results in diploid daughter cells. Question 42 Why are glycolipids important in the cell membranes? O Glycolipid helps the cell to provide additional surface area. O Glycolipid helps the cell to regulate materials passing through the cell membrane. O Glycolipid helps the cell to store sugar molecules O…Question 3: A woman suffers from albinism and is also a carrier for haemophilia. Draw a well- labelled diagram of a cell in Metaphase depicting the relevant chromosomes associated with these conditions. Identify the specific chromosomes (consult previous lectures) associated with these conditions. Your diagrams should clearly indicate the chromatids, chromosomes, genotypes, alleles, and cell structure needed in Metaphase. Use A/a to indicate alleles associated with albinism and H/h for haemophilia.Question 29 Which of the following is not characteristic of Metaphase Il of meiosis? O Sister chronatids are aligned on the metaphase plate. O Each cell is haploid. O There are half the number of tetrads as there were in Metaphase L O Each chromosome is comprised of two sister chromatids. Question 30 A drug that prevents would have a deleterious effect on the moverment of chomosomes during anaphase? O'shortening of mierotubules O nuclear chvelop breakdown 2 elongation of microtubules O førmåtion of centrosomes
- Changes Deformation Invagination Micronuclei Aneuploidy Heteroploidy Margination of chromatin Condensation of euchromatin Polyploidy Kariomers Inclusions 1. 2. 3. DefinitionQuestion 14 (Pick all that apply) Heritable genetic variation can arise through: Changes in chromosome number Recombination Somatic mutations Crossing over during meiosis Mutations that occur during mitosisQUESTION 8 Which of the following events does not occur during mejosis I? O DNA exchange O crossing-over between homologous chromosomes O separation of sister chromatids O separation of homologous chromosomes O pairing of homologous chromosomes QUESTION 9 The sources of genetic variation during meiosis are: O crossing-over and the random assortment of maternal and paternal chromosomes. O random pairing of tetrads and random assortment of maternal and paternal chromosomes. O crossing-over and random pairing of tetrads. O random pairing of tetrads and mutations. O polyploidy and random pairing of tetrads.