A xYz/XyZ strain is crossed to a xyz/xyz strain. The following offspring are recovered.
XyZ 705
xYz 705
XYZ 195
xyz 195
xYZ 95
Xyz 95
xyZ 5
XYz 5
What is the correct order of these genes?
A. XYZ
B. XZY
C. ZXY
A xYz/XyZ strain is crossed to a xyz/xyz strain. The following offspring are recovered.
XyZ 705
xYz 705
XYZ 195
xyz 195
xYZ 95
Xyz 95
xyZ 5
XYz 5
What is the correct order of these genes?
A. XYZ
B. XZY
C. ZXY
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Part B
A synthetic lethal interaction is one in which two yeast stains with non-lethal phenotypes are crossed and the resulting double mutant is lethal.
Of these yeast strains, what are all the possible combinations that could be crossed to look for synthetic lethal interactions?
Strain A: a null mutation in a nonessential gene
Strain B: a null mutation in an essential gene
Strain C: a conditional mutation in an essential gene
(B) Yeast cells with a null mutation in an essential gene cannot survive.
(C) However, if the mutation in the essential gene is conditional (meaning that the phenotype only shows under certain conditions), the cell can survive under normal conditions.
(A) Additionally, cells with null mutations in nonessential genes can survive because the nonessential genes are not required for survival.
Select all that apply.
A. strain A x strain A |
B. strain B x strain B |
C. strain C x strain C |
D. strain A x strain B |
E. strain A x strain C |
F. strain B x strain C |
A synthetic lethal interaction is one in which two yeast stains with non-lethal phenotypes are crossed and the resulting double mutant is lethal.
Of these yeast strains, what are all the possible combinations that could be crossed to look for synthetic lethal interactions?
Strain A: a null mutation in a nonessential gene
Strain B: a null mutation in an essential gene
Strain C: a conditional mutation in an essential gene
Select all that apply.
Select all that apply.
A. strain A x strain A |
B. strain B x strain B |
C. strain C x strain C |
D. strain A x strain B |
E. strain A x strain C |
F. strain B x strain C |