BIOL 3001 FINAL QUESTIONS &
ANSWERS(RATED A+)
Drosophila melanogaster is in the family? order? class? - ANSWERFamily
Drosophilidae, Order Diptera, Class Insecta
Drosophila means? melanogaster means? - ANSWER"dew lover"
"black abdomen."
Standard phenotype is called "wild type" because it was - ANSWERthe most
common found in the wild
The common name, fruit fly came from? - ANSWERhow they were collected, placing
overripe bananas in a jar
Males have _____ abdomen while females have ____ - ANSWERsolid
stripes
Females are (darker/lighter) than males - ANSWERdarker
Fruit flies have 4 pairs of chromosomes, 2N=8: - ANSWER3 large pair and one very
small pair.
They are labeled I, II, III, IV largest to smallest order
____ have the knob or ovipositor on the tip of the abdomen - ANSWERFemales
Sex determination in Fruit Flies follows the _____, but gender is dependent on ____
- ANSWERLygaeus mode (presence of different sex chromosomes)
the actual number of x chromosomes
Chromosome pair ___ are the sex chromosomes, while the rest are ____ -
ANSWERI
autosomes
Know the scientific name for the fruit fly (genus species)? - ANSWERDrosophila
melanogaster
How many pairs of chromosomes do fruit flies have? - ANSWER4
Which chromosome pair functions as the sex chromosomes? - ANSWERpair 1
Which chromosome pairs are autosomal? - ANSWERpairs II, III, IV
Standard cross - ANSWERParent 1 x Parent 2 → F1 x F1 → F2
, Dominant backcross - ANSWERParent 1(dominant) x Parent 2 (recessive)→ F1 x
Parent 1 → F2
Recessive backcross - ANSWERParent 1(dominant) x Parent 2 (recessive)→ F1 x
Parent 2 → F2
Medel's Big Six:
Pure A - ANSWERAA x AA all AA all AA homozygous dominant
Medel's Big Six:
Pure a - ANSWERaa x aaall aa all aa homozygous recessive
Medel's Big Six:
Parental (P1) - ANSWERAA x aa all Aa all Aa dominant expressed
Mendel's Big Six:
F1 Cross - ANSWERAa x Aa 1AA:2Aa:1aa 3A_:1aa
Mendel's Big Six:
RecessiveBackX - ANSWERAa x aa 1Aa:1aa 1Aa:1aa
Mendel's Big Six:
DominantBackX - ANSWERAa x AA 1AA:1Aa all A_ dominant expressed
Know how to perform ChiSquared goodness of fit tests: - ANSWERCalculate a
ChiSquared value using the Chisquared formula to compare observed to expected
phenotypic ratios for monohybrid and dihybrid crosses.
x^2 = SUM (OE)^2 / E
Know how to calculate degrees of freedom - ANSWERn-1
Allele - ANSWERAn allele is one of two or more versions of a gene. An individual
inherits two alleles for each gene, one from each parent.
Locus - ANSWERis the specific location of a gene or DNA sequence or position on a
chromosome.
Homozygous vs heterozygous - ANSWERhomozygous is having two of the same
alleles for a
gene where heterozygous is having two different versions of the gene. AA vs Aa
Segregation ratio vs assortment ratio - ANSWERA
segregation ratio is the phenotypic or
genotypic ratio for alleles at a single locus, whereas an assortment ratio refers to the
phenotypic or genotypic ratio considering alleles at multiple loci.
Principle of Independent Assortment - ANSWERgenes encoding different characters
assort
independently when gametes are formed. Independent assortment is based on the
random separation of homologous chromosomes in anaphases I of meiosis; it takes
ANSWERS(RATED A+)
Drosophila melanogaster is in the family? order? class? - ANSWERFamily
Drosophilidae, Order Diptera, Class Insecta
Drosophila means? melanogaster means? - ANSWER"dew lover"
"black abdomen."
Standard phenotype is called "wild type" because it was - ANSWERthe most
common found in the wild
The common name, fruit fly came from? - ANSWERhow they were collected, placing
overripe bananas in a jar
Males have _____ abdomen while females have ____ - ANSWERsolid
stripes
Females are (darker/lighter) than males - ANSWERdarker
Fruit flies have 4 pairs of chromosomes, 2N=8: - ANSWER3 large pair and one very
small pair.
They are labeled I, II, III, IV largest to smallest order
____ have the knob or ovipositor on the tip of the abdomen - ANSWERFemales
Sex determination in Fruit Flies follows the _____, but gender is dependent on ____
- ANSWERLygaeus mode (presence of different sex chromosomes)
the actual number of x chromosomes
Chromosome pair ___ are the sex chromosomes, while the rest are ____ -
ANSWERI
autosomes
Know the scientific name for the fruit fly (genus species)? - ANSWERDrosophila
melanogaster
How many pairs of chromosomes do fruit flies have? - ANSWER4
Which chromosome pair functions as the sex chromosomes? - ANSWERpair 1
Which chromosome pairs are autosomal? - ANSWERpairs II, III, IV
Standard cross - ANSWERParent 1 x Parent 2 → F1 x F1 → F2
, Dominant backcross - ANSWERParent 1(dominant) x Parent 2 (recessive)→ F1 x
Parent 1 → F2
Recessive backcross - ANSWERParent 1(dominant) x Parent 2 (recessive)→ F1 x
Parent 2 → F2
Medel's Big Six:
Pure A - ANSWERAA x AA all AA all AA homozygous dominant
Medel's Big Six:
Pure a - ANSWERaa x aaall aa all aa homozygous recessive
Medel's Big Six:
Parental (P1) - ANSWERAA x aa all Aa all Aa dominant expressed
Mendel's Big Six:
F1 Cross - ANSWERAa x Aa 1AA:2Aa:1aa 3A_:1aa
Mendel's Big Six:
RecessiveBackX - ANSWERAa x aa 1Aa:1aa 1Aa:1aa
Mendel's Big Six:
DominantBackX - ANSWERAa x AA 1AA:1Aa all A_ dominant expressed
Know how to perform ChiSquared goodness of fit tests: - ANSWERCalculate a
ChiSquared value using the Chisquared formula to compare observed to expected
phenotypic ratios for monohybrid and dihybrid crosses.
x^2 = SUM (OE)^2 / E
Know how to calculate degrees of freedom - ANSWERn-1
Allele - ANSWERAn allele is one of two or more versions of a gene. An individual
inherits two alleles for each gene, one from each parent.
Locus - ANSWERis the specific location of a gene or DNA sequence or position on a
chromosome.
Homozygous vs heterozygous - ANSWERhomozygous is having two of the same
alleles for a
gene where heterozygous is having two different versions of the gene. AA vs Aa
Segregation ratio vs assortment ratio - ANSWERA
segregation ratio is the phenotypic or
genotypic ratio for alleles at a single locus, whereas an assortment ratio refers to the
phenotypic or genotypic ratio considering alleles at multiple loci.
Principle of Independent Assortment - ANSWERgenes encoding different characters
assort
independently when gametes are formed. Independent assortment is based on the
random separation of homologous chromosomes in anaphases I of meiosis; it takes
