rdue.edu/res/pur due/biological sciences/Biology%20IV%20Genetics%20and%20Molecul

Question

rdue.edu/res/pur due/biological sciences/Biology%20IV%20Genetics%20and%20Molecular%20Biology HW3/ BIOL 24100,Biol IV Gnto C Secure https://loncapaos.pu Chase Anderson ' (Student -section : 001) Main Menu Contents Grades You have a Drosophila line that is homozygous for autosomal recessive alleles a, b, and c, linked in that order. You crossed females of this line with males homozygous for the corresponding wild-type alelles. You then cross the F1 heterozygous males with their heterozygous sisters. You obtain the ses denote wild-type following F2 phenotypes (where letters denote recessive phenotypes and plu phenotypes) ++ 1364 a b c 365 a b 87 ++C 84 a 47 + b c44 a c5 + b + 4 What is the recombinant frequency between a and b? Decimal answer only. (Note: there is no crossing over in Drosophila males) Submit Answer Tries 0/5 What is the recombinant frequency between b and c? Decimal answer only Submit Answer Tries o/5 What is the coefficient of coincidence? Decimal answer only Submit Answer Tries 0/5 Di

Explanation / Answer

according to questions

total no of offspring = [1364+365+87+84+47+44+5+4]=2000

according to formula = no of recombinant offspring/total no of offspring *100

so part 1)    = (5+4)/2000 *100 = 9/20= .405

part 2)     44+47/2000 *100 = 91/20 = 4.55

part 3) coincidence +interference = 1

if coincidence is =0 then interference is complete and no crossover are observed

if c= 0 to 1 then partial interference

and c = 1 then no interference and all expected doublecross observed

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.