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Author Question: Sigma virus infection inDrosophila melanogastercauses flies to become paralyzed and then die in high ... (Read 20 times)

JMatthes

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on: Jan 12, 2022

Question 1

Random segregation of organelles during cell division in a multicellular species is likely to result in an increased rate of which of the following?
◦ incomplete penetrance
◦ dominant loss-of-function mutations
◦ dominant gain-of-function mutations
◦ chromosomal duplication mutations
◦ chromosomal deletion mutations

Question 2

Sigma virus infection in Drosophila melanogaster causes flies to become paralyzed and then die in high concentrations of CO2.  The virus is passed on extrachromosomally. Two isogenic strains of Drosophila cultures are maintained: R (resistant to CO2 or wild type) and S (susceptible to CO2, infected with sigma). After crosses between male R and female S flies, subsets of offspring of each sex are tested for CO2 sensitivity. Which of the following results do you expect?
◦ All the offspring are sensitive.
◦ All the offspring are female.
◦ All the offspring are male.
◦ All the offspring are sensitive, but only males pass it on.
◦ Only male offspring backcrossed to the female parent are sensitive.
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Marked as best answer by JMatthes on Jan 12, 2022

sarahccccc

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Reply #1 on: Jan 12, 2022
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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JMatthes

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Reply 2 on: Jan 12, 2022
:D TYSM

scottmt

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Reply 3 on: Yesterday
Excellent

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