Part A 1.A two-point test cross is performed between two loci in an area of the
ID: 195764 • Letter: P
Question
Part A
1.A two-point test cross is performed between two loci in an area of the genome known to have very low levels of recombination. How will this affect distances on genetic maps made in this region of the genome?
It will not affect the estimation of distances
2.You perform a testcross with an individual that is known to be heterozygous but their allele arrangement is unknown. You get the following progeny:
What is the allele arrangement in the heterozygous parent?
Underestimate the distancesExplanation / Answer
1. It could under or overestimate the distance.
2. The allele arrangement in the heterozygous parent may:
Trans configuration; Ab/aB
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