Flies with the Cy mutation (Curly) have curled wings. The offspring of a mating between Cy...
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Flies with the Cy mutation (Curly) have curled wings. The offspring of a
mating between Cy males and wild type females produces a 50:50 ratio of Cy and wild type flies, but when both males and females are Cy , two thirds of the offspring are Cy and one third are wild type. Explain the why these ratios are obtained.
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Flies with the Cy mutation (Curly) have curled wings. The
offspring of a
mating between Cy...
The Curly (Cy) mutant in fruit flies causes curled up wings. This mutant is due to...
The Curly (Cy) mutant in fruit flies causes curled up wings. This mutant is due to an autosomal dominant mutation that exhibits 80% penetrance. The miniature body (m) phenotype is due to an X-linked recessive mutation and is completely penetrant. A male with normal body size and heterozygous for the Cy mutation is crossed to a female with normal wings and miniature body. What is the probability of obtaining progeny flies from this cross that are males with miniature bodies...
4. In Drosophila melanogaster, the phenotype curly wings is due to a mutant allele Cy that...
4. In Drosophila melanogaster, the phenotype curly wings is due to a mutant allele Cy that is lethal when homozygous. A population is established with an initial frequency of Cy equal to 0.168. Denoting + as the wild- type (i.e. non-mutant) allele at this locus, calculate the expected frequency of Cy in the next generation if the relative fitness of the ++ homozygote to the Cy/+ heterozygote is: a) 1 : 1 b) 1 : 0.5 c) Briefly explain why...
In flies, body (e) is recessive to the WT (E). In the mating CcDdEe x ccddee...
In flies, body (e) is recessive to the WT (E). In the mating CcDdEe x ccddee You observe the following offspring: curled wings (c) is recessive to the WT (C. Cardinal eyes (d) is recessive to the WT (D). Ebony 88 wild type wings, wild type bodies, wild type eyes doubta Cc. ddee 4 cardinal eyes singt Ce bd ee 658 ebony bodies cc dd ee 50 ebony bodies and cardinal eyes Sinao cc pd Ee52 curled wings Sing ccdd...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to mutation...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a white-eyed female (mutant phenotype) mates with a red-eyed male (normal or wild- type phenotype), what is the likelihood that their female offspring will have red eyes? Parents: white-eyed female X red-eyed male Select one: a. O...
In Drosophila, the autosomal recessive brown eye color mutation (b) displays interactions with both the X-linked...
In Drosophila, the autosomal recessive brown eye color mutation
(b) displays interactions with both the X-linked recessive
vermilion mutation (v) and the autosomal recessive scarlet (s)
mutation. Flies homozygous for brown and simultaneously hemizygous
or homozygous for vermilion have white eyes. Flies simultaneously
homozygous for both the brown and scarlet mutations also have white
eyes. Flies that are wildtype at all 3 loci have wildtype eye
color. Flies that are homozygous or hemizygous for the recessive
mutant at only one...
Sex Linked inheritance: Set up your own mating between two flies but at least one parent...
Sex Linked inheritance: Set up your own mating between two flies but at least one parent must have a white allele in it, and present the Punnett square, genotype and phenotypes of both parents and the offspring of this cross. Remember to show the alleles on the X and/or Y chromosomes. W cannot be used for white and for the wild at the same time. Subscripts must be used. i.e Xw+Y x Xw+Xw 1 Xw+Y : 1 XwY : 1 Xw+Xw+ :...
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;...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a red-eyed female who is a carrier of the white eyed allele (normal or wild-type phenotype) mates with a white-eyed male (mutant phenotype), what is the likelihood that their male offspring will have red eyes? Parents:...
E10 from Brooker: In fruit flies, curved wings are recessive to straight wings, and ebony body...
E10 from Brooker: In fruit flies, curved wings are recessive to straight wings, and ebony body is recessive to gray body. A cross was made berween true-breeding flies with curved wings and pray bodies and flies with straight wings and ebony bodies. The F1 offspring were then mated to flies with curved wings and ebony bodies to produce an F2 generation. A. Diagram the genotypes of this cross starting with the parental generation and ending with the Frencration B. What...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a true breeding red-eyed female (normal or wild-type phenotype) mates with a white- eyed male (mutant phenotype), what is the likelihood that their male offspring will have white eyes? Parents: red-eyed female X white-eyed male Select...
In flies, body (e) is recessive to the WT (E). In the mating CcDdEe x ccddee You observe the following offspring: curled wings (c) is recessive to the WT (C. Cardinal eyes (d) is recessive to the WT (D). Ebony 88 wild type wings, wild type bodies, wild type eyes doubta Cc. ddee 4 cardinal eyes singt Ce bd ee 658 ebony bodies cc dd ee 50 ebony bodies and cardinal eyes Sinao cc pd Ee52 curled wings Sing ccdd...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a white-eyed female (mutant phenotype) mates with a red-eyed male (normal or wild- type phenotype), what is the likelihood that their female offspring will have red eyes? Parents: white-eyed female X red-eyed male Select one: a. O...
In Drosophila, the autosomal recessive brown eye color mutation
(b) displays interactions with both the X-linked recessive
vermilion mutation (v) and the autosomal recessive scarlet (s)
mutation. Flies homozygous for brown and simultaneously hemizygous
or homozygous for vermilion have white eyes. Flies simultaneously
homozygous for both the brown and scarlet mutations also have white
eyes. Flies that are wildtype at all 3 loci have wildtype eye
color. Flies that are homozygous or hemizygous for the recessive
mutant at only one...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a red-eyed female who is a carrier of the white eyed allele (normal or wild-type phenotype) mates with a white-eyed male (mutant phenotype), what is the likelihood that their male offspring will have red eyes? Parents:...
E10 from Brooker: In fruit flies, curved wings are recessive to straight wings, and ebony body is recessive to gray body. A cross was made berween true-breeding flies with curved wings and pray bodies and flies with straight wings and ebony bodies. The F1 offspring were then mated to flies with curved wings and ebony bodies to produce an F2 generation. A. Diagram the genotypes of this cross starting with the parental generation and ending with the Frencration B. What...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a true breeding red-eyed female (normal or wild-type phenotype) mates with a white- eyed male (mutant phenotype), what is the likelihood that their male offspring will have white eyes? Parents: red-eyed female X white-eyed male Select...
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