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Question 2 (5 pts). In roses, two gene loci on an autosomal chromosome are 30cM from...

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Biology

Question 2 (5 pts). In roses, two gene loci onan autosomal chromosome are 30cM from each other. At locus 1, theE allele for red flower color is completelydominant to the e allele for pink flower color. Atlocus 2, the G allele for thorns is completelydominant to allele g for thornless. A particularrose cultivar, true-breeding for red flower and thorns, is crossedto cultivar 2, true-breeding for pink flowers and thornless. The F1generation is testcrossed with cultivar 2 and 300 testcross progenyare produced.

What is the expected frequency of gametes of genotype EGproduced by the F1-generations plants?

When the F1-generation plants produce gametes, what is theexpected frequency of recombinant gametes?

In the testcross progeny, how many plants are expected to havepink flowers and be thornless?

In the testcross progeny, how many plants are expected to havepink flowers and thorns?

e. If the two loci were not linked,and segregated independently from each other, how

many plants would be expected to have pink flowers and thorns inthe testcross progeny?

Answer & Explanation Solved by verified expert
4.4 Ratings (699 Votes)
a 35 b Recombinant gametes 30 Distance between the genes cM Recombination frequenc c Pink thornless35 d Pink thorn15 e    See Answer
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