A female of genotype a b c + + + produces 100 meiotic tetrads. Of these, 68 show no crossover events. Of the remaining 32, 20 show a crossover between a and b, 10 show a crossover between b and c, and 2 show a double crossover between a and b and between b and c. Of the 400 gametes produced, how many of each of the 8 different genotypes will be produced? Assuming the order a–b–c and the allele arrangement previously shown, what is the map distance between these loci?
A female of genotype a b c + + + produces 100 meiotic tetrads. Of these, 68 show no crossover events. Of the remaining 32, 20 show a crossover between a and b, 10 show a crossover between b and c, and 2 show a double crossover between a and b and between b and c. Of the 400 gametes produced, how many of each of the 8 different genotypes will be produced? Assuming the order a–b–c and the allele arrangement previously shown, what is the map distance between these loci?
Chapter14: Human Inheritance
Section: Chapter Questions
Problem 2GP: Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect...
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A female of genotype
a b c
+ + +
produces 100 meiotic tetrads. Of these, 68 show no crossover
events. Of the remaining 32, 20 show a crossover between a and b,
10 show a crossover between b and c, and 2 show a double crossover between a and b and between b and c. Of the 400 gametes
produced, how many of each of the 8 different genotypes
will be produced? Assuming the order a–b–c and the allele
arrangement previously shown, what is the map distance
between these loci?
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