Question
In: Biology
These are the results of a three point test cross in Drosophila for the three loci...
These are the results of a three point test cross in Drosophila for the three loci cv f v: cv + + = 155, cv f + = 78, + f + = 145, cv f v = 274, cv + v = 192, + + v = 72, + f v = 144, + + + = 230. What is the map distance to 2 decimal places between the v and f loci? Hint: Establish gene order first."
Solutions
Expert Solution
Answer has been attached below.
To determine the order of the gene, we have to look two points
- parental phenotype- maximum no phenotype
Double cross over - least no of phenotype
So in between them we have to look at the gene , which is being cross over . The gene which is being cross over located in the middle .
gladiator answered 1 year agoRelated Solutions
"These are the results of a three point test cross in Drosophila for the three loci...
"These are the results of a three point test cross in
Drosophila for the three loci cv f v: cv + + = 212, + v +
= 48, + + + = 606, cv v + = 771, cv f v = 299, cv + f = 52, + f v =
229, + + f = 850. What is the map distance to 2 decimal places
between the cv and f loci? Hint: Establish gene order first."
"These are the results of a three point cross in Drosophila for the three loci DEF:...
"These are the results of a three point cross in Drosophila for
the three loci DEF: deF =89, dEf =36, DEF =299, dEF =587, def =321,
DeF =42, DEf =98, Def =548. The map distance between the E and F
loci is 13.12cM. The map distance between the D and F loci is
34.55cM. Calculate the Interference correct to 2 decimal
places."
"These are the results of a three point cross in Drosophila for the three loci DEF:...
"These are the results of a three point cross in Drosophila for
the three loci DEF: dfE =287, dfe =28, dFe =211, Dfe=600, DfE =300,
DFE=76, DFe =333, dFE =401. What is the map distance to 2 decimal
places between the D and E loci? Hint: Establish gene order
first."
These are the results of a three point cross in Drosophila for the three loci DEF:...
These are the results of a three point cross in Drosophila for
the three loci DEF: deF =89, dEf =33, DEF =166, dEF =276, def =187,
DeF =42, DEf =98, Def =287. The map distance between the E and F
loci is 22.24cM. The map distance between the D and F loci is
36.33cM. Calculate the Interference correct to 2 decimal
placess
You are performing a three-point test cross in order to map the order and distance between...
You are performing a three-point test cross in order to map the
order and distance between three genes, designated X,
Y, and Z, and you obtain the following
results:
Phenotypes Number Observed
+ Y
+
1
+ +
Z
72
X +
Z
2
X Y
+
70
X +
+
3
+ Y Z
2
X Y Z
0
+ +
+
0
Which gene is in the middle?
a) X
b) Y
c) Z
d)...
The data table below represents offspring generated through a 3 point mapping cross in Drosophila. Use...
The data table below represents offspring generated through a 3
point mapping cross in Drosophila. Use the table to answer
the following questions:
a. What was the parental cross (parental genotypes)?
b. Fill in which phenotype represents the different classes
(NCO, DCO, SCOs).
c. What is the relative order of the genes?
d. What is the map distance (centimorgans) between the first and
second genes (region I)?
e. What is the map distance (centimorgans) between the second
and third genes...
(3) The following is a list of loci from Drosophila melanogaster that have been mapped via...
(3) The following is a list of loci from Drosophila
melanogaster that have been mapped via linkage studies. The
symbols for the loci have been shortened to one letter, and map
distances have been rounded. Here are the map distances, in cM, for
all pair-wise combinations of the 7 loci:
c-d
50
d-s
50
f-y
3
c-f
11
d-t
12
s-t
50
c-s
7
d-w
50
s-w
19
c-t
50
d-y
50
s-y
21
c-w
12
f-s
18
t-w
50...
32) Normal (wild-type) Drosophila eyes are red. In a cross in Drosophila involving the X-linked recessive...
32) Normal (wild-type) Drosophila eyes are red. In a cross in
Drosophila involving the X-linked recessive eye mutation white
(resulting in a white eye) and the autosomal recessive eye mutation
sepia (resulting in a dark eye), predict the sex and color of the
eyes of the offspring from crossing true-breeding parents for parts
A) and B) below. White is epistatic to the
expression of sepia (i.e., if an eye is white, it cannot
also be sepia; i.e., white masks the...
What is a test cross? What is the importance of a test cross? And what are...
What is a test cross? What is the importance of a test cross?
And what are the results
of a test cross for a single trait?
2: Results obtained from a tension test on a bar of uniform cross section 10 mm...
2:
Results obtained from a tension test on a bar of uniform cross
section 10 mm x 10 mm subjected to an axial pull of 8000 N were
tabulated. The lateral dimensions of the bar were found to be
changed to 9.9985 mm x 9.9985 mm while using a material having
modulus of rigidity equal to 0.8 x 107 N/cm2. By determining the
values for different moduli, identify the properties of material
and establish the relationship between them. What changes...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Task 3: Research Project (5 marks) You’re investigating a case involving a 2 GB drive that...
- 2. Do you agree with Nietzsche’s claim that “every elevation of the type ‘man’ has hitherto...
- Question: The function predictAnswer should be made based on the following. Your answer must be able...
- A 2.5 mm -diameter sphere is charged to -4.5 nC . An electron fired directly at...
- On June 30, 2017, Wisconsin, Inc., issued $158,250 in debt and 19,400 new shares of its...
- The Ivanhoe Department of Transportation has issued 25-year bonds that make semiannual coupon payments at a...
- Task 1: Investigating Hashing software and the basic usage (total 9 marks) In this task, you...
ADVERTISEMENT