Two autosomal genes controlling beak shape in finches are 18 cM apart on the same chromosome. Pointy beaks (P) are dominant to round beaks (p), and narrow beaks (N) are dominant to wide beaks (n). If you cross two finches with the allelic configurations PN/pn (first parent) and Pn/pN (second parent), what is the likelihood their offspring will have round, narrow beaks? I. Which of the following is true for the first parent's gametes? a) PpNn is a non-crossover gamete b) the frequency of the gamete pn is 0.41 c) the frequency of the gamete Pn is 0.41 d) PN is a cross over gamete e) the frequency of the gamete Ppnn is 0.5 2. Which of the following is true for the second parent's gametes a) PN is a cross over gamete b) PpNn is a non-crossover gamete c) the frequency of the gamete pn is 0.41 d) the frequency of the gamete PpNn is 0.82 e) the frequency of the gamete Pn is 0.09 3. What is the target genotype? Group of answer choices a)ppN_ b)ppNn c)P_nn d)P_N_ e)Ppnn 4. What is the likelihood their offspring will have round, narrow beaks? Enter your answer as percent without the percent sign to two digits (e.g. 12.34)
Two autosomal genes controlling beak shape in finches are 18 cM apart on the same chromosome. Pointy beaks (P) are dominant to round beaks (p), and narrow beaks (N) are dominant to wide beaks (n). If you cross two finches with the allelic configurations PN/pn (first parent) and Pn/pN (second parent), what is the likelihood their offspring will have round, narrow beaks?
I. Which of the following is true for the first parent's gametes?
a) PpNn is a non-crossover gamete
b) the frequency of the gamete pn is 0.41
c) the frequency of the gamete Pn is 0.41
d) PN is a cross over gamete
e) the frequency of the gamete Ppnn is 0.5
2. Which of the following is true for the second parent's gametes
a) PN is a cross over gamete
b) PpNn is a non-crossover gamete
c) the frequency of the gamete pn is 0.41
d) the frequency of the gamete PpNn is 0.82
e) the frequency of the gamete Pn is 0.09
3. What is the target genotype?
4. What is the likelihood their offspring will have round, narrow beaks? Enter your answer as percent without the percent sign to two digits (e.g. 12.34)
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