For picture A  Type a)  Type 1) 4 dark spores 4 light spores.....in that order 4:4= 4 Type 2) 4 light spores 4 dark spores.....in that order 4:4= 3 Total sum of parental types =7  Type b) Type 1) 2 dark 2 light 2dark 2 light spores 2:2:2:2= 1 Type 2) 2 light  2 dark  2 light  2dark spores 2:2:2:2 = 4 Total sum of recombinat type A = 5 Type c) Type 1) 2 light spores 4 dark spores 2 light spores 2:4:2 = 1 Type 2) 2 dark spores. 4 light spores 2 dark spores= 5 Total sum of type B recombinats= 6 (2B) Type a) 4 dark spores 4 light spores.....in that order 4:4 (type 1) ---->8 4 light spores and 4 dark spores in that order...... 4:4 (type 2). ---->5 Total Sum of Parental Types =13 Type b) 2 dark 2 light 2dark 2 light spores 2:2:2:2 (type 1). ---->4 2 light  2 dark  2 light  2dark spores 2:2:2:2 (type 2). ---6 Total Sum Recombinant Type A =10   Type c) 2 light spores 4 dark spores 2 light spores 2:4:2 (type 1).   ---->1 2 dark spores. 4 light spores 2 dark spores. (type 2). ---->6 Total Sum Recombinant Type B=7     Distance between the gene for spore color (T)  and the centromere =     Total # of 2:2:2:2 ascii + # of  2:4:2  ascii _(numerator)___                      x         1/2         x     100             =.     Distance  (gene to centromere)  # of 4:4 ascii  +  #of 2:2:2:2 ascii   +  #of 2:4:2  ascii.  (denominator) This is sometimes written:      d=    2nd division segregants/1st and 2nd division segregants   x 1/2   x 100   . Picture A distance. (Use numbers from part 2A above ^) Gene to Centromere Distance  (d)=   Total # of 2:2:2:2 ascii + # of  2:4:2  ascii _(numerator)___                      x         1/2         x     100             =.     Distance  (gene to centromere)  # of 4:4 ascii  +  #of 2:2:2:2 ascii   +  #of 2:4:2  ascii.  (denominator   . Picture B distance   (Use numbers from part 2B above ^) Gene to Centromere Distance  (d)=   Total # of 2:2:2:2 ascii + # of  2:4:2  ascii _(numerator)___                      x         1/2         x     100             =.     Distance  (gene to centromere)  # of 4:4 ascii  +  #of 2:2:2:2 ascii   +  #of 2:4:2  ascii.  (denominator

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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THIS IS A THREE PART QUESTION! PLEASE COMPLETE EACH OF THE PARTS

(2a)

 

For picture A 

Type a) 

Type 1) 4 dark spores 4 light spores.....in that order 4:4= 4

Type 2) 4 light spores 4 dark spores.....in that order 4:4= 3

Total sum of parental types =7 

Type b)

Type 1) 2 dark 2 light 2dark 2 light spores 2:2:2:2= 1

Type 2) 2 light  2 dark  2 light  2dark spores 2:2:2:2 = 4

Total sum of recombinat type A = 5

Type c)

Type 1) 2 light spores 4 dark spores 2 light spores 2:4:2 = 1

Type 2) 2 dark spores. 4 light spores 2 dark spores= 5

Total sum of type B recombinats= 6

(2B)

Type a)

4 dark spores 4 light spores.....in that order 4:4 (type 1) ---->8

4 light spores and 4 dark spores in that order...... 4:4 (type 2). ---->5

Total Sum of Parental Types =13

Type b)

2 dark 2 light 2dark 2 light spores 2:2:2:2 (type 1). ---->4

2 light  2 dark  2 light  2dark spores 2:2:2:2 (type 2). ---6

Total Sum Recombinant Type A =10

 

Type c)

2 light spores 4 dark spores 2 light spores 2:4:2 (type 1).   ---->1

2 dark spores. 4 light spores 2 dark spores. (type 2). ---->6

Total Sum Recombinant Type B=7

 

 

Distance between the gene for spore color (T)  and the centromere = 

 

 Total # of 2:2:2:2 ascii + # of  2:4:2  ascii _(numerator)___                      x         1/2         x     100             =.     Distance  (gene to centromere)

 # of 4:4 ascii  +  #of 2:2:2:2 ascii   +  #of 2:4:2  ascii.  (denominator)

This is sometimes written:

     d=    2nd division segregants/1st and 2nd division segregants   x 1/2   x 100

 

.

Picture A distance. (Use numbers from part 2A above ^)

Gene to Centromere Distance  (d)=  

Total # of 2:2:2:2 ascii + # of  2:4:2  ascii _(numerator)___                      x         1/2         x     100             =.     Distance  (gene to centromere)

 # of 4:4 ascii  +  #of 2:2:2:2 ascii   +  #of 2:4:2  ascii.  (denominator

 

.

Picture B distance   (Use numbers from part 2B above ^)

Gene to Centromere Distance  (d)=  

Total # of 2:2:2:2 ascii + # of  2:4:2  ascii _(numerator)___                      x         1/2         x     100             =.     Distance  (gene to centromere)

 # of 4:4 ascii  +  #of 2:2:2:2 ascii   +  #of 2:4:2  ascii.  (denominator

 

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