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Fruit Fly Lab Quiz

Bio Quizzes

QuestionAnswer
How many pairs of chromosome do Drosophila have? What are they? They have 4 pairs of chromosome, 3 pairs of autosome and one sex chromosome pair. Female is XX and male is XY
What are the four major stages? What is the variable and its effects? Egg, larva, pulpa and adult. The time it takes varies with temperature, the hotter the less time it takes.
What are the 5 factors that distinguishes the males from the females? 1-Size 2-Body Color 3-Shape 4-Sex organs 5-Sex combs
Difference in size? Male smaller than females
Difference in body color? Males have black spot at the end of abdomen and female has stripes
Difference in shape? Male have more rounded end than female
Difference in sex organs? Male has heavy dark bristles on ventral, females have ovipositor to lay eggs
Difference in sex combs? Males have small, black combs mounted on the anterior edge of the fourth segment of both of the male's front legs, females don't have that
What is genotype and what is phenotype? Genotype is the combination of alleles and phenotype is the physical manifestation of the allele.
What is an allele? Alternative version of a gene (Ex: purple for one and white for the other, basically they're possibilities)
What is homozygote and heterozygote? Homozygote is XmXm while heterozygote is XmXw
Identify the parts of a drosophila larva 5 parts (posterior spiracles, trachea, body segments, salivary glands, mouth)
Identify the parts the a male drosophila forlimb 5 parts (femur, tibia, claw, sex combs, Tarsi 1 to 5)
Steps to figure out what the parents were You know the children (find probability for each genre 50% white, 25 red male 25 white female) and from there you can guess whether the parents are heterozygote/homozygote and do the punnett table.
Created by: Malayka
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