BIO 342: Genetics - Exam 2 Miami University Questions with Correct Answers
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Course
Bio 342
Institution
Bio 342
Principle of segregation Correct Answer Alleles separate during meiosis
Independent assortment Correct Answer Alleles at one locus sort independently from alleles at another locus
Recombination Correct Answer Alleles sort into new combinations
Linked genes separate together and crossing...
BIO 342: Genetics - Exam 2 Miami University
Questions with Correct Answers
Principle of segregation Correct Answer ✓✓ Alleles separate during
meiosis
Independent assortment Correct Answer ✓✓ Alleles at one locus sort
independently from alleles at another locus
Recombination Correct Answer ✓✓ Alleles sort into new combinations
Linked genes separate together and crossing over produces
recombination between them Correct Answer ✓✓ linked genes are
found in the same loci of chromosomes
complete linkage leads to noncombinant gametes and noncombinant
progeny
Crossing over leads to ____; if crossing over occurs between two
normally linked loci, they will sort ____ Correct Answer ✓✓
recombination; independently
calculating recombination frequency Correct Answer ✓✓ RF = (#
recombinant progeny / total # of progeny) x 100
, coupling (cis configuration) Correct Answer ✓✓ one chromosome
contains both wild-type alleles, one chromosome contains both mutant
alleles
repulsion (trans configuration) Correct Answer ✓✓ wild-type allele and
mutant allele are found on the same chromosome
genetic maps are determined by ____ Correct Answer ✓✓ recombinant
frequency
genetic map Correct Answer ✓✓ an ordered list of the genetic loci
along a particular chromosome
steps in determining gene order in three-point cross Correct Answer ✓✓
1. identify recombinant progeny (two most numerous phenotypes)
2. identify the double-crossover progeny (two least numerous
phenotypes)
3. compare the phenotypes of double-crossover progeny with the
phenotypes of recombinant progeny - they should be alike in two
characteristics and differ in one
Recombinant frequency allows us to predict ____ for a cross with linked
genes Correct Answer ✓✓ expected offspring
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