In plants, you want to know whether two loci, P and Q, are linked and if...
In plants, you want to know whether two loci, P and Q, are linked and if so, what their map distance is. You do a testcross with a P/p●Q/q plant and observe the following progeny. Based on this information, what are the genotypes of the parents? Genotype Progeny P/p●Q/q 21 p/p●q/q 25 P/p●q/q 216 p/p●Q/q 238
a) The loci are linked and 4.0 m.u. apart
b) the loci are linked and 18.4 m.u. apart
c) the loci are linkd and 9.2 m.u. apart
d) the loci are unlinked
e) the loci are linked and 8 m.u. apart
Please show how you arrive to the answer including the m.u. number
Homework Answers
Answer:
c) the loci are linkd and 9.2 m.u. apart
Explanation:
Hint: Non-recombinant progeny are more common in linkage.
Recombinant progeny are very less number. Recombinant progeny are p/p.q/q & P/p.Q/q
Recombination frequency (RF)= (no. of recombinant progeny / total progeny)100
Total progeny =
RF= (46 /500)100 = 9.2%
RF(%) = Distance between genes (mu)
Distance between gene P & Q = 9.2 m.u.
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meiosis. You will also use logic to determine unknown genotypes,
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Part A - Deducing phenotypes and genotypes of selfed parents
Mendel studied pea plants dihybrid for seed shape (round versus
wrinkled) and seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele
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