Unformatted text preview: are most distant.
correction = 52+46+22+22+2(4+2) = 154/500 = 30.8 19 Answer:
p j r 30.8 m.u.
20.8 m.u. 20 Indicates they ARE on the same
chromosome no, the numbers are all very very close so it is a no brainer
that the genes are being assorted independently. not linked. so far apart that every time there is a crossover. 21 Summary: Three-point crosses
The two largest phenotypic classes
represent the parental classes (nonrecombinant)
The two smallest phenotypic classes
represent double crossovers
The gene whose alleles have been ‘switched’
between parental and double crossover
classes is in the middle
Double crossovers must be counted twice when
calculating the distance between the two outside
22 Determining gene order and alleles from
unknowns on the X chromosome using
three-point cross analysis we don’t know what the arrangement
of each allele is on each chromosome.
parental class - noncrossover crossover between most dis...
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This document was uploaded on 02/25/2014.
- Winter '14