Homework Answers
15.Correct answer is: a) W-/ W-
Reason: In female fruit fly, both X chromosomes should contain the mutant allelel to express the white mutation.
16.Correct answer is: d) normal flies
Reason: When we refer to fruit fly genetics, we say a normal fruit fly as wild type.
32.Correct answer is: d) incomplete dominance
Reason:In incomplete dominance, the dominant allele fails to mask the recessive allele completely as a result of which the resulting phenotype is a blend of both the alleles.
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Expert Q&A Done ANSWER ALL Lab 4: Introduction to Drosophila Genetics: X-linkage 15: A female fruit...
ANSWER ALL 32) In heterozygous alleles produce a phenotype that is distinct from individuals who are...
ANSWER ALL
32) In heterozygous alleles produce a phenotype that is distinct from individuals who are homozygous for one allele or the other. a) simple inheritance b) sex-linked c) autosomal d) incomplete dominance Lab 4: Introduction to Drosophila Genetics: X-linkage 15: A female fruit fly that is homozygous for white mutation will have the genotype a) W/W b) W/W 1 c) W/W d) W/Y 16: Wild type of flies are a) F2 flies b) F1 flies c) mutated flies d)...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF = loss of function. Flies homozygous for a LOF mutation (no gene product made) in ebony have dark black bodies. Flies homozygous for a LOF mutation (no gene product made) in dumpyhave truncated (short) wings. Flies homozygous for a partial LOF mutation (some gene product made but significantly less than normal) in how have wings that will not fold down (held out wings; that's...
In Genetics lab, you decide to further investigate Drosophila eye color. In addition to studying the...
In Genetics lab, you decide to further investigate Drosophila eye color. In addition to studying the sepia gene (se), you decide to study the gene mahogany eyes (mo). Flies that are mo-/mo- have brown eyes. You wonder if a fly that is a double mutant for sepia and mahogany eyes would have very dark brown (almost black) eyes. Because se and mo are both on the third chromosome, you have to do a recombination. You look through a former labmate’s...
can you please help me with number 4? An example of linked genes in Drosophila The...
can you please help me with number 4?
An example of linked genes in Drosophila The genes for wing shape and body color are linked (they are on the same chromosome) Drosophila and linked genes In the example shown left, wild type alleles are dominant and are given an upper case symbol of the mutant phenotype (Cu or Eb). This notation used for Drosophila departs from the convention of using the dominant gene to provide the symbol. This is necessary...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF = loss of function. Flies homozygous for a LOF mutation (no gene product made) in ebony have dark black bodies. Flies homozygous for a LOF mutation (no gene product made) in dumpy have truncated (short) wings. Flies homozygous for a partial LOF mutation (some gene product made but significantly less than normal) in how have wings that will not fold down (held out wings;...
7. Tra diploid organism has the genotype AABh, what% of its gametes would you expect to...
7. Tra diploid organism has the genotype AABh, what% of its gametes would you expect to have the genotype A (assume that A/a locus and B/blocus are found on different chromosomes)? a) 1598 b) 2596 c) 5096 d) 7546 8. Phenylketonuria is an inherited human genetic disorder resulting from a mutation to the PAH gene. Individuals with mutant forms of the PAW gene exhibit leaming deficits, abnormal skin pigmentation, as well as heart problems. This is an example of: a)...
Page 2 NAME: 6. The failure of homologous chromosomes for sister chromatids) to separate properly during...
Page 2 NAME: 6. The failure of homologous chromosomes for sister chromatids) to separate properly during cell division is called a) aneuploidy b) triploidy c) non-disjunction d) autosomal dysfunction 7. Ia diploid organism has the genotype AAB, what of its gametes would you expect to have the genotype AB (assume that A/a locus and B/blocus are found on different chromosomes)? a) 1996 b) 2596 c) 5036 d) 7596 8. Phenylketonuria is an inherited human genetic disorder resulting from a mutation...
16. Use the following information to answer the questions below. Drosophila (fruit flies) usually have long...
16. Use the following information to answer the questions below. Drosophila (fruit flies) usually have long wings (+) but mutations in two different genes can result in bent wings (bt) or vestigial wings (vg). If a homozygous bent wing fly is mated with a homozygous vestigial wing fly, which of the following offspring would you expect? a. 1/2 bent and vestigial to 1/2 normal b. 1/2 bent and 1/2 vestigial flies c. 3/4 bent to 1/4 vestigial ratio d. all...
43. Genes a and b are X-linked and are located 7 mu apart on the X...
43. Genes a and b are X-linked and are located 7 mu apart on the X chromosome of Drosophila. A female of genotype a+ b/a b+ is mated with a wild-type (a+b+/Y). a. What is the probability that one of her sons will be either a+b+ or a b+ in phenotype? b. What is the probability that one of her daughters will be a+b+ in phenotype? 44. Three recessive autosomal mutations in Drosophila: a versus wild-type A. b versus B,...
need help with these questions please. 12: In the F2 generation of Mendel's monohybrid cross, the...
need help with these questions please.
12: In the F2 generation of Mendel's monohybrid cross, the two heterozygous parent corn plants (Pp x Pp) produced offspring with the following genotypes e) PP (purple). Pp (purple). Pp(white). f) All purple g) All White h) All pink 15: A female fruit fly that is homozygous for white mutation will have the genotype a) W-w- b) Wºw c) W/W- d) W/Y 21: A father is heterozygous for the ability to roll the tongue....
ANSWER ALL
32) In heterozygous alleles produce a phenotype that is distinct from individuals who are homozygous for one allele or the other. a) simple inheritance b) sex-linked c) autosomal d) incomplete dominance Lab 4: Introduction to Drosophila Genetics: X-linkage 15: A female fruit fly that is homozygous for white mutation will have the genotype a) W/W b) W/W 1 c) W/W d) W/Y 16: Wild type of flies are a) F2 flies b) F1 flies c) mutated flies d)...
can you please help me with number 4?
An example of linked genes in Drosophila The genes for wing shape and body color are linked (they are on the same chromosome) Drosophila and linked genes In the example shown left, wild type alleles are dominant and are given an upper case symbol of the mutant phenotype (Cu or Eb). This notation used for Drosophila departs from the convention of using the dominant gene to provide the symbol. This is necessary...
7. Tra diploid organism has the genotype AABh, what% of its gametes would you expect to have the genotype A (assume that A/a locus and B/blocus are found on different chromosomes)? a) 1598 b) 2596 c) 5096 d) 7546 8. Phenylketonuria is an inherited human genetic disorder resulting from a mutation to the PAH gene. Individuals with mutant forms of the PAW gene exhibit leaming deficits, abnormal skin pigmentation, as well as heart problems. This is an example of: a)...
Page 2 NAME: 6. The failure of homologous chromosomes for sister chromatids) to separate properly during cell division is called a) aneuploidy b) triploidy c) non-disjunction d) autosomal dysfunction 7. Ia diploid organism has the genotype AAB, what of its gametes would you expect to have the genotype AB (assume that A/a locus and B/blocus are found on different chromosomes)? a) 1996 b) 2596 c) 5036 d) 7596 8. Phenylketonuria is an inherited human genetic disorder resulting from a mutation...
43. Genes a and b are X-linked and are located 7 mu apart on the X chromosome of Drosophila. A female of genotype a+ b/a b+ is mated with a wild-type (a+b+/Y). a. What is the probability that one of her sons will be either a+b+ or a b+ in phenotype? b. What is the probability that one of her daughters will be a+b+ in phenotype? 44. Three recessive autosomal mutations in Drosophila: a versus wild-type A. b versus B,...
need help with these questions please.
12: In the F2 generation of Mendel's monohybrid cross, the two heterozygous parent corn plants (Pp x Pp) produced offspring with the following genotypes e) PP (purple). Pp (purple). Pp(white). f) All purple g) All White h) All pink 15: A female fruit fly that is homozygous for white mutation will have the genotype a) W-w- b) Wºw c) W/W- d) W/Y 21: A father is heterozygous for the ability to roll the tongue....
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