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Section 0501 a coefficient of coincidence of 05 in a

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Section: 05.01A coefficient of coincidence of 0.5 in a region of three genes means that half as many doublecrossovers were observed as would have been expected if crossovers in the two intervals wereindependent.TrueFalseReferencesTrue / FalseLearning Objective:05.03.02 Refinegenetic maps basedon data from three-point testcrosses.Section: 05.03
78.Award:10.00 pointsMitotic recombination occurs between homologous chromosomes. In which of the following wouldyounotexpect to encounter mitotic recombination?tobacco plantsDrosophila melanogasterE. colihumansReferencesMultiple ChoiceLearning Objective:05.06.01 Explainhow mitoticrecombination leadsto the mosaiccondition called twinspots.Section: 05.06
79.Award:10.00 pointsIn some fungi, such as the bread moldNeurospora crassa, the arrangement of spores in the ascusdirectly reflects the order in which they were produced during meiosis. What is the collection ofspores produced by meiosis inNeurospora crassacalled?ordered tetrad or ordered octadordered pentadunordered tetradunordered octadSince asci with 8 spores are really reflective of the tetrad of meioticproducts, ordered tetrad is fine. Most ascomycetes typically have 8spores per ascus that represent a tetrad of clones of two. That is whyI changed answer D to the nonsense answer "ordered pentad."ReferencesMultiple ChoiceLearning Objective:05.05.01 Explain themeaning of the termtetradas applied tothe asci producedby certain fungi.Section: 05.05
80.Award:10.00 points81.Award:10.00 pointsTwin spotting provides evidence of what genetic event?meiotic recombinationmutationbiological evolutionlinkagemitotic recombinationReferencesMultiple ChoiceLearning Objective:05.06.01 Explainhow mitoticrecombination leadsto the mosaiccondition called twinspots.Section: 05.06Another name for a chromosome is a _______, because it contains alleles that are often inheritedtogether.crossing-over grouplinkage groupgenetic recombinantbivalentReferencesMultiple ChoiceLearning Objective:05.03.04 Describethe relationshipbetween linkagegroups andchromosomes.Section: 05.03
82.Award:10.00 pointsThe diploid garden pea plant has 14 chromosomes. The haploid fungusNeurospora crassahas 7chromosomes. Neither organism has separate male and female individuals. Therefore, the numberof linkage groups in these two organisms isthe garden pea has 8 linkage groups, andNeurosporahas 8.the garden pea has 14 linkage groups, andNeurosporahas 7.the garden pea has 7 linkage groups, andNeurosporahas 7.the garden pea has 15 linkage groups, andNeurosporahas 8.ReferencesMultiple ChoiceLearning Objective:05.03.04 Describethe relationshipbetween linkagegroups andchromosomes.Section: 05.03
83.Award:10.00 pointsSuppose that progeny classes in a dihybrid testcross (Aa Bb×aa bb) do not appear in a 1:1:1:1 ratio.What does this suggest?

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Term
Spring
Professor
FRENCH
Tags
Genetic linkage, Chromosomal crossover, NPD, nonparental ditype

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