Homework Answers
C. 50% is correct option.
Inversion loop is formed when chromosome is reversed end to end. When crossing over happens in an inversion loop, homologous centromeres are connected to form scientific bridge.
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1. During meiosis when crossing over occurs in a paracentric inversion loop, what percent of the...
Gametes produced in a paracentric inversion heterozygote WITHOUT crossing over are: a. two gametes with deletions...
Gametes produced in a paracentric inversion heterozygote WITHOUT crossing over are: a. two gametes with deletions and/or duplications and two normal gametes b. one normal gamete, two with deletions and/or duplications and one with the inversion c. two gametes with the inversion and two normal gametes d. two gametes with the inversion and two with the deletion and/or duplications e. No normal gametes
1. A flower is heterozygous for the following inversion of chromosome 1 (dot=centromere) A B C ...
1. A flower is heterozygous for the following inversion of chromosome 1 (dot=centromere) A B C ● D E F G a b e d ● c f g a. Is this a paracentric or pericentric inversion? I am thinking Pericentric? b. Draw the pairing configuration at prophase I including all 4 chromatids. I wasnt too sure how to map the loop out for this one c. Give the genotypes of the gametes from this meiosis if there is a...
Practice Problems 7: Chromosome Variation in Structure 1. A petunia is heterozygous for the following inversion...
Practice Problems 7: Chromosome Variation in Structure 1. A petunia is heterozygous for the following inversion of chromosome 1 (the dot is the centromere): A a b B C D • E C F f G g e d a. Is this a paracentric or pericentric inversion? b. Draw the pairing configuration at prophase l including all 4 chromatids. c. Give the genotypes of the gametes from this meiosis if there is a single cross-over between genes D and E,...
Inversion Problems: An individual is heterozygous for an inversion: ADCBEFG HI, and during gamete formation there...
Inversion Problems: An individual is heterozygous for an inversion: ADCBEFG HI, and during gamete formation there is a crossing over event between C and B. Draw chromosome structure pre and post meiosis. Be sure to label the chromatids/chromosomes with the appropriate sequence of genes. Label mutant and wild type chromatids/chromosomes, viable and non-viable gametes. Circle and identify the mutations in the non-viable gametes inuerston If an individual is heterozygous for an inversion, ABC DGFEHI, and a crossing over event occurred...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences of crossing over in two cases: crossing over between C and D, and crossing over between F and G ABCDEFGHIJK 2 ABCHG FEDIJK 20. Using the same inverted chromosome above: a. Two crossing over events occur among these chromatids: a crossover between genes H and G on chromatids 2 and 4, and a crossover between genes D and E on chromatids 1 and 3....
6.) During meiosis, when crossing-over occurs between two homologous chromosomes, it does not happen at a...
6.) During meiosis, when crossing-over occurs between two homologous chromosomes, it does not happen at a single point, but rather two points with a stretch of DNA in between. a. What are the two junction points called? b. What is the region between the two points called and what is different about this region compared to how double-stranded DNA usually is? c. If the region described in b.) is located within a gene and the two homologues have different alleles...
Crossing-Over in Meiosis Meiosis is a process of nuclear division that reduces the number of chromosomes...
Crossing-Over in Meiosis Meiosis is a process of nuclear division that reduces the number of chromosomes in new cells to half the number in the original cell. The parent cell is diploid (2n), and it begins meiosis with a replicated set of chromosomes. During meiosis, this parent cell Homologou will divide twice to create four haploid (1n) cells. pairs During prophase I of meiosis I, homologous pairs of chromosomes pair up and stick together to form tetrads through the process...
Shaw University 8. Which of the following statements is correct? a. Crossing over occurs in prophase...
Shaw University 8. Which of the following statements is correct? a. Crossing over occurs in prophase I of meiosis and metaphase of mitosis. b. DNA replication occurs once prior to mitosis and twice prior to meiosis c. Both mitosis and meiosis result in daughter cells identical to the parent cells. d. Karyokinesis occurs once in mitosis and twice in meiosis. e. Synapsis occurs in prophase of mitosis. 9. The cell cycle in a certain cell type has a duration of...
Chromosomes can exchange genetic information during a process called “crossing over.” This occurs when homologous chromosomes...
Chromosomes can exchange genetic information during a process called “crossing over.” This occurs when homologous chromosomes are lined up in pairs. When does this happen? View Available Hint(s) Chromosomes can exchange genetic information during a process called “crossing over.” This occurs when homologous chromosomes are lined up in pairs. When does this happen? a, anaphase II b, prophase I c, anaphase I d, metaphase II
2. Which of the following occurs during mitosis but not during meiosis I?
2. Which of the following occurs during mitosis but not during meiosis I? a. The chromosomes are pulled to opposite poles of the spindle apparatus. b. The chromatids of each chromosome are separated. c. The nuclear envelope breaks down. d. Both synapsis and crossing over take place. e. The diploid number of chromosomes is reduced to the haploid number.3. Table 1 shows the stage and number of cells and chromosomes per cell at the end of the stage in a 2n - 24 organism. u...
Practice Problems 7: Chromosome Variation in Structure 1. A petunia is heterozygous for the following inversion of chromosome 1 (the dot is the centromere): A a b B C D • E C F f G g e d a. Is this a paracentric or pericentric inversion? b. Draw the pairing configuration at prophase l including all 4 chromatids. c. Give the genotypes of the gametes from this meiosis if there is a single cross-over between genes D and E,...
Inversion Problems: An individual is heterozygous for an inversion: ADCBEFG HI, and during gamete formation there is a crossing over event between C and B. Draw chromosome structure pre and post meiosis. Be sure to label the chromatids/chromosomes with the appropriate sequence of genes. Label mutant and wild type chromatids/chromosomes, viable and non-viable gametes. Circle and identify the mutations in the non-viable gametes inuerston If an individual is heterozygous for an inversion, ABC DGFEHI, and a crossing over event occurred...
19. A viable inversion heterozygote is undergoing meiosis. The chromosomes are illustrated below. Compare the consequences of crossing over in two cases: crossing over between C and D, and crossing over between F and G ABCDEFGHIJK 2 ABCHG FEDIJK 20. Using the same inverted chromosome above: a. Two crossing over events occur among these chromatids: a crossover between genes H and G on chromatids 2 and 4, and a crossover between genes D and E on chromatids 1 and 3....
6.) During meiosis, when crossing-over occurs between two homologous chromosomes, it does not happen at a single point, but rather two points with a stretch of DNA in between. a. What are the two junction points called? b. What is the region between the two points called and what is different about this region compared to how double-stranded DNA usually is? c. If the region described in b.) is located within a gene and the two homologues have different alleles...
Crossing-Over in Meiosis Meiosis is a process of nuclear division that reduces the number of chromosomes in new cells to half the number in the original cell. The parent cell is diploid (2n), and it begins meiosis with a replicated set of chromosomes. During meiosis, this parent cell Homologou will divide twice to create four haploid (1n) cells. pairs During prophase I of meiosis I, homologous pairs of chromosomes pair up and stick together to form tetrads through the process...
Shaw University 8. Which of the following statements is correct? a. Crossing over occurs in prophase I of meiosis and metaphase of mitosis. b. DNA replication occurs once prior to mitosis and twice prior to meiosis c. Both mitosis and meiosis result in daughter cells identical to the parent cells. d. Karyokinesis occurs once in mitosis and twice in meiosis. e. Synapsis occurs in prophase of mitosis. 9. The cell cycle in a certain cell type has a duration of...
2. Which of the following occurs during mitosis but not during meiosis I? a. The chromosomes are pulled to opposite poles of the spindle apparatus. b. The chromatids of each chromosome are separated. c. The nuclear envelope breaks down. d. Both synapsis and crossing over take place. e. The diploid number of chromosomes is reduced to the haploid number.3. Table 1 shows the stage and number of cells and chromosomes per cell at the end of the stage in a 2n - 24 organism. u...
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