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In flies, assume black (B) is dominant and green (b) is recessive for abdomen color, a...
A new gene is being investigated in fruit flies. The recessive allele of this gene (b)...
A new gene is being investigated in fruit flies. The recessive allele of this gene (b) causes the wings to develop a blue color, while the dominant allele (b) permits wild-type colorless wings to develop. Preliminary studies indicate that this new gene is located on the X-chromosome. You decided to perform a two-point testcross to determine its position relative to the well-established garnet eyes gene (g). You cross a female heterozygous for both genes with a testcross male fly, and...
Assume a strain of flies carrying the dominant eye mutation ‘Lobe’ (L) was crossed with a...
Assume a strain of flies carrying the dominant eye mutation ‘Lobe’ (L) was crossed with a strain homozygous for recessive mutations ‘smooth abdomen, straw body’ (ab, stw). All three genes are carried on the second chromosome. The F1 L females were then crossed with homozygous ab, stw males, and the following phenotypes were observed: smooth abdomen, straw body 820 ____________ Lobe 780 ____________ smooth abdomen, Lobe 42 ____________ straw body 58 ____________ smooth abdomen 148 ____________ Lobe, straw body 152...
coat color is due to a dominant allele (W), black coat color to its recessive allele...
coat color is due to a dominant allele (W), black coat color to its recessive allele unnett squares for each of the following crosses and answer the questions. 2. In sheep, white tw). Construct P d frequency fo a. A black sheep crossed to a black sheep. List the genotypes, phenotypes, an each of the offspring b. A white sheep, the product of a black x white cross, is crossed with a black sheep. List the genotypes, phenotypes, and frequency...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive phenotype. b flowers are red, pink, or white c. whether an individual is homozygous or heterozygous. d. what types of offspring could be produced 36. If red flower color is dominant over white and a homozygous red flowered plant was crossed with a homozygous white flowered plant, what percentage of their offspring in the Fi generation would have white flowers? a. b. с. 100%...
In horses, the color black is due to a dominant allele (B) and chestnut color is...
In horses, the color black is due to a dominant allele (B) and chestnut color is due to a recessive allele (b) of the same gene. The trotting gate is due to a dominant allele (T) and the pacing gate is due to the recessive allele (t) of the same gene. These two genes are located on different chromosomes. A homozygous black pacer horse mates with a homozygous, chestnut trotting horse and they have a daughter. a. What are the...
Question 1, Part 2: A student crossed two flies and collected Fl progeny. The first parental...
Question 1, Part 2: A student crossed two flies and collected Fl progeny. The first parental fly was homozygous for two recessive mutations - yellow body (y) and bent wings (b), while the other parental was homozygous for the wild- type alleles - black body (Y) and straight wings (B). All of the F1 progeny had straight wings and black bodies. He did a testcross between the yy bb parent and the F1 progeny, and observed the following classes in...
In beetles, a gene coding for body color and a gene coding for bristle length are located on the same chromosome. Black...
In beetles, a gene coding for body color and a gene coding for bristle length are located on the same chromosome. Black (B) is dominant over grey body (b) and long bristles (s) are recessive to short bristles (S). A beetle that is heterozygous for black body and short bristles is mated with one that has a grey body and long bristles. What are the genotypes of the parents? ____________ ____________ Assume that the B allele is linked with the...
As it is UNIT GENETICS PROBLEMS #2: TEST CROSSES 1. In peas, green pods are dominant...
As it is
UNIT GENETICS PROBLEMS #2: TEST CROSSES 1. In peas, green pods are dominant and yellow pods are the recessive trait. You have pea plants with green pods but you are unsure of the parentage of these plants. How would you determine the genotype of your green pod plants 2. Two black mice mate. Six of their offspring are black and two are white. (Black fur is dominant to white.) a· What are the genotypes of the parents....
Question 5 (14 marks) The allele cn gives fruit flies cinnabar eyes, whereas the allele cn...
Question 5 (14 marks) The allele cn gives fruit flies cinnabar eyes, whereas the allele cn gives red, the wild-type phenotype. The allele wx of a separate allele gives waxy wings, and wx gives non-waxy wings (wild-type). The allele b of a third gene gives fruit flies a black body, whereas the allele b gives a brown (wild-type) body colour. A geneticist knows these three genes are on the same chromosome, but does not know what order the genes are...
Drosophila genetics hw. Can someone help explain this You are doing a genetics experiment with the...
Drosophila genetics hw. Can someone help explain this
You are doing a genetics experiment with the fruit fly. In the "P" generation, you cross two true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All of the flies in the F1 generation are brown and have normal wings. Indicate the alleles associated with dominant phenotypes by uppercase letters and alleles associated with recessive phenotypes by lowercase letters. Assume the genes are...
A new gene is being investigated in fruit flies. The recessive allele of this gene (b) causes the wings to develop a blue color, while the dominant allele (b) permits wild-type colorless wings to develop. Preliminary studies indicate that this new gene is located on the X-chromosome. You decided to perform a two-point testcross to determine its position relative to the well-established garnet eyes gene (g). You cross a female heterozygous for both genes with a testcross male fly, and...
coat color is due to a dominant allele (W), black coat color to its recessive allele unnett squares for each of the following crosses and answer the questions. 2. In sheep, white tw). Construct P d frequency fo a. A black sheep crossed to a black sheep. List the genotypes, phenotypes, an each of the offspring b. A white sheep, the product of a black x white cross, is crossed with a black sheep. List the genotypes, phenotypes, and frequency...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive phenotype. b flowers are red, pink, or white c. whether an individual is homozygous or heterozygous. d. what types of offspring could be produced 36. If red flower color is dominant over white and a homozygous red flowered plant was crossed with a homozygous white flowered plant, what percentage of their offspring in the Fi generation would have white flowers? a. b. с. 100%...
Question 1, Part 2: A student crossed two flies and collected Fl progeny. The first parental fly was homozygous for two recessive mutations - yellow body (y) and bent wings (b), while the other parental was homozygous for the wild- type alleles - black body (Y) and straight wings (B). All of the F1 progeny had straight wings and black bodies. He did a testcross between the yy bb parent and the F1 progeny, and observed the following classes in...
As it is
UNIT GENETICS PROBLEMS #2: TEST CROSSES 1. In peas, green pods are dominant and yellow pods are the recessive trait. You have pea plants with green pods but you are unsure of the parentage of these plants. How would you determine the genotype of your green pod plants 2. Two black mice mate. Six of their offspring are black and two are white. (Black fur is dominant to white.) a· What are the genotypes of the parents....
Question 5 (14 marks) The allele cn gives fruit flies cinnabar eyes, whereas the allele cn gives red, the wild-type phenotype. The allele wx of a separate allele gives waxy wings, and wx gives non-waxy wings (wild-type). The allele b of a third gene gives fruit flies a black body, whereas the allele b gives a brown (wild-type) body colour. A geneticist knows these three genes are on the same chromosome, but does not know what order the genes are...
Drosophila genetics hw. Can someone help explain this
You are doing a genetics experiment with the fruit fly. In the "P" generation, you cross two true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All of the flies in the F1 generation are brown and have normal wings. Indicate the alleles associated with dominant phenotypes by uppercase letters and alleles associated with recessive phenotypes by lowercase letters. Assume the genes are...
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