BIOL 3001 MIDTERM EXAM Questions with Detailed Verified Answers

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BIOL 3001 MIDTERM EXAM Questions
with Detailed Verified Answers

Question: What are the learning objectives for Lab 1?
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


Question:modes of inheritance
Answer: manner in which a genetic trait or disorder is passed from one
generation to the next


Question:What family, order, and class is Drosophila melanogaster classified
in?
Answer: Family: Drosophilidae
Order: Diptera (which also includes flies, mosquitoes and midges)
Class: Insecta (insects)


Question:What does Drosophila (genus name) mean?
Answer: dew-lover


Question:What does melanogaster mean?

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Answer: black abdomen


Question:What other names do fruit flies have?
Answer: red-eyed pomace fly, vinegar fly and wine fly, all relating to this
species' attraction to fermenting fruits


Question:How did fruit flies get their name?
Answer: because they are collected by placing a bottle containing over-ripe
fruit (often bananas) outside


Question:wild-type
Answer: phenotype most commonly captured in the wild


Question:How many chromosomes do fruit flies have?
Answer: 4 pairs (2n=8)


Question:What chromosome in fruit flies determines sex?
Answer: chromosome I


Question:lygaues mode
Answer: presence of different sex chromosomes


Question:T or F: Sex-determination in fruit flies follows the lygaeus mode.
Answer: true


Question:T or F: In fruit flies, females are XX and males are XY.
Answer: true