BIOL 3001 Midterm questions with
complete solutions already passed
What are the learning objectives for Lab 1? - correct answer ✔✔- Understand the basic
attributes of Drosophila melanogaster
- Conduct crosses and collect progeny data using the fly portal
- Design and diagram monohybrid crosses
- Complete chi-squared analyses to compare observed versus expected traits
- Better understand the effects of different progeny number (sample size) on expected ratios
modes of inheritance - correct answer ✔✔manner in which a genetic trait or disorder is passed
from one generation to the next
What family, order, and class is Drosophila melanogaster classified in? - correct answer
✔✔Family: Drosophilidae
Order: Diptera (which also includes flies, mosquitoes and midges)
Class: Insecta (insects)
What does Drosophila (genus name) mean? - correct answer ✔✔dew-lover
What does melanogaster mean? - correct answer ✔✔black abdomen
What other names do fruit flies have? - correct answer ✔✔red-eyed pomace fly, vinegar fly and
wine fly, all relating to this species' attraction to fermenting fruits
, How did fruit flies get their name? - correct answer ✔✔because they are collected by placing a
bottle containing over-ripe fruit (often bananas) outside
wild-type - correct answer ✔✔phenotype most commonly captured in the wild
How many chromosomes do fruit flies have? - correct answer ✔✔4 pairs (2n=8)
What chromosome in fruit flies determines sex? - correct answer ✔✔chromosome I
lygaues mode - correct answer ✔✔presence of different sex chromosomes
T or F: Sex-determination in fruit flies follows the lygaeus mode. - correct answer ✔✔true
T or F: In fruit flies, females are XX and males are XY. - correct answer ✔✔true
T or F: Sex is dependent on the actual number of X chromosomes in fruit flies. - correct answer
✔✔true
How can the genders be distinguished in fruit flies? - correct answer ✔✔- Females are larger
than males.
- Females have a "knob" (ovipositor) on the tip of the abdomen.
- Males have a solid abdomen while females have stripes.
standard F1 cross - correct answer ✔✔crosses offspring from the F1 Generation to each other
backcross - correct answer ✔✔performed by crossing one of the F1 progeny back to one of the
original parents to produce the F2 generation
complete solutions already passed
What are the learning objectives for Lab 1? - correct answer ✔✔- Understand the basic
attributes of Drosophila melanogaster
- Conduct crosses and collect progeny data using the fly portal
- Design and diagram monohybrid crosses
- Complete chi-squared analyses to compare observed versus expected traits
- Better understand the effects of different progeny number (sample size) on expected ratios
modes of inheritance - correct answer ✔✔manner in which a genetic trait or disorder is passed
from one generation to the next
What family, order, and class is Drosophila melanogaster classified in? - correct answer
✔✔Family: Drosophilidae
Order: Diptera (which also includes flies, mosquitoes and midges)
Class: Insecta (insects)
What does Drosophila (genus name) mean? - correct answer ✔✔dew-lover
What does melanogaster mean? - correct answer ✔✔black abdomen
What other names do fruit flies have? - correct answer ✔✔red-eyed pomace fly, vinegar fly and
wine fly, all relating to this species' attraction to fermenting fruits
, How did fruit flies get their name? - correct answer ✔✔because they are collected by placing a
bottle containing over-ripe fruit (often bananas) outside
wild-type - correct answer ✔✔phenotype most commonly captured in the wild
How many chromosomes do fruit flies have? - correct answer ✔✔4 pairs (2n=8)
What chromosome in fruit flies determines sex? - correct answer ✔✔chromosome I
lygaues mode - correct answer ✔✔presence of different sex chromosomes
T or F: Sex-determination in fruit flies follows the lygaeus mode. - correct answer ✔✔true
T or F: In fruit flies, females are XX and males are XY. - correct answer ✔✔true
T or F: Sex is dependent on the actual number of X chromosomes in fruit flies. - correct answer
✔✔true
How can the genders be distinguished in fruit flies? - correct answer ✔✔- Females are larger
than males.
- Females have a "knob" (ovipositor) on the tip of the abdomen.
- Males have a solid abdomen while females have stripes.
standard F1 cross - correct answer ✔✔crosses offspring from the F1 Generation to each other
backcross - correct answer ✔✔performed by crossing one of the F1 progeny back to one of the
original parents to produce the F2 generation
