4.3-4. The gene for eye color in a certain male fruit fly has alleles (R, W)....
4.3-4. The gene for eye color in a certain male fruit fly has alleles (R, W). The gene for eye color in the mating female fruit fly also has alleles (R, W). Their offspring receive one allele for eye color from each parent. If an offspring ends up with either (R, R), (R, W), or (W, R), its eyes will look red. Let X equal the number of offspring having red eyes. Let Y equal the number of red-eyed offspring having (R, W) or (W, R) genes. (a) If the total number of offspring is n = 400, how is X distributed? (b) Give the values of E(X) and Var(X). (c) Given that X = 300, how is Y distributed? ( d) Give the values of E(Y IX = 300) and Var(Y IX = 300).
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4.3-4. The gene for eye color in a certain male fruit fly has
alleles (R, W)....
29, In fruit flies, red eyes are dominant over white eyes. The gene for eye color...
29, In fruit flies, red eyes are dominant over white eyes. The gene for eye color (R) is found on the X chromosome (X^R). Females have 2 X chromosomes and males are XY. Fill in the following (case sensitive!): Genotype of a white eyed female: Possible female gametes; separate gametes with a comma (,): Genotype of a red eyed male: Possible male gametes; separate gametes with a comma (,): In fruit flies, red eyes are dominant over white eyes. The...
A fruit fly that is heterozygous for eye color mates with a fruit fly with white...
A fruit fly that is heterozygous for eye color mates with a fruit fly with white eyes. a) What are the genotypes of the individuals in the parental generation? b) What is the probability that their offspring will have red eyes? HTML Editore 8 8 x x = = = IT
You are working with the fruit fly that generally exhibits a brick red eye color (wild-type)....
You are working with the fruit fly that generally exhibits a brick red eye color (wild-type). In one stock vial you recover an eye color mutant with brown eyes that you use to eventually derive a pure-breeding brown-eyed stock. Your friend, performing independent studies on the fruit fly, also recovers a pure breeding brown eye color mutant that is phenotypically identical to your strain. How would you go about determining if the two pure-breeding brown-eyed mutant strains represent mutations in...
There are three genes that you are tracking on a fruit fly: Gene ‘r’ that...
There are three genes that you are tracking on a fruit fly: Gene ‘r’ that results in the phenotype of red body colour Gene ‘t’ for the phenotype of transparent wings Gene ‘b’ for the phenotype of black coloured eyes. You cross breed fruit flies with the above mentioned genes and observe the following: When red body fruit flies are cross bred with transparent winged fruit flies, 2400 offspring were produced. Out of the 2400 offspring,...
2. Some biology students were checking the eye color for a large number of fruit flies....
2. Some biology students were checking the eye color for a large number of fruit flies. For the individual fly, suppose that the probability of white eyes is 25 and the probability of red eyes is .75, and that we may treat these flies as independent Bernoulli trials. Suppose that the biology students check the eyes of fruit flies until the third white-eyed fruit fly is observed. (a) What is the probability of observing third white-eyed fruit fly on the...
2. A white eyed female fly (w is a recessive allele of a gene for eye...
2. A white eyed female fly (w is a recessive allele of a gene for eye pigmentation on the X chromosome) is crossed with a red eyed male fly. a. Give the genotypes for the parental generation. b. Give the phenotypes and genotypes, and their proportions, for the F1 generation. c.Fls are crossed to one another. Give the phenotypes and genotypes, and their proportions, for the F2 generation.
A female fruit fly with vermilion eyes and normal wings is crossed to a male with...
A female fruit fly with vermilion eyes and normal wings is crossed to a male with normal red eyes and cut wings. The F1 progeny consist of females with red eyes and normal wings, and males with vermilion eyes and normal wings. When the F1 progeny are interbred, the F2 consists of two types of females vermilion eyes, normal wings (1/2) and red eyes, normal wings (12), and two types of males-vermilion eyes, normal wings (12) and red eyes, cut...
A red-eyed male fly was crossed with a male whale with white eyes. The following offspring...
A red-eyed male fly was crossed with a male whale with white eyes. The following offspring were observed: 90 females with red eyes 43 males with red eyes 47 males with white eyes Which statement is most accurate? a) We have polygen legacy b) The gene shows the 3: 1 ratio in monohybrid crossing c) The red-eye gene must be attached to the X-chromosome d) The white- eye gene must be attached to the Y-chromosome e) Females can never have...
A cross was made between a male fruit fly with purple eyes and two different female...
A cross was made between a male fruit fly with purple eyes and two different female flies with red eyes. The first female produced 41 progeny that all had red eyes, whereas the second female produced 18 progeny with red eyes and 21 progeny with purple eyes. a. Diagram the two crosses in words (you don't need to show the genotypes yet). b. Which eye color is dominant and which is recessive? How do you know? c. Choose a symbol...
Assortment of genes on same chromosome In the fruit fly Drosophila, there is a dominant gene...
Assortment of genes on same chromosome In the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At another gene locus. there is a dominant gene for red eyes and its recessive allele for purple eyes. A female that was heterozygous at both gene loci was mated with a male that is homozygous for both recessive alleles. Knowing this, complete the sentences with the correct terms. 94% crossing over independent assortment...
A fruit fly that is heterozygous for eye color mates with a fruit fly with white eyes. a) What are the genotypes of the individuals in the parental generation? b) What is the probability that their offspring will have red eyes? HTML Editore 8 8 x x = = = IT
2. Some biology students were checking the eye color for a large number of fruit flies. For the individual fly, suppose that the probability of white eyes is 25 and the probability of red eyes is .75, and that we may treat these flies as independent Bernoulli trials. Suppose that the biology students check the eyes of fruit flies until the third white-eyed fruit fly is observed. (a) What is the probability of observing third white-eyed fruit fly on the...
2. A white eyed female fly (w is a recessive allele of a gene for eye pigmentation on the X chromosome) is crossed with a red eyed male fly. a. Give the genotypes for the parental generation. b. Give the phenotypes and genotypes, and their proportions, for the F1 generation. c.Fls are crossed to one another. Give the phenotypes and genotypes, and their proportions, for the F2 generation.
A female fruit fly with vermilion eyes and normal wings is crossed to a male with normal red eyes and cut wings. The F1 progeny consist of females with red eyes and normal wings, and males with vermilion eyes and normal wings. When the F1 progeny are interbred, the F2 consists of two types of females vermilion eyes, normal wings (1/2) and red eyes, normal wings (12), and two types of males-vermilion eyes, normal wings (12) and red eyes, cut...
A cross was made between a male fruit fly with purple eyes and two different female flies with red eyes. The first female produced 41 progeny that all had red eyes, whereas the second female produced 18 progeny with red eyes and 21 progeny with purple eyes. a. Diagram the two crosses in words (you don't need to show the genotypes yet). b. Which eye color is dominant and which is recessive? How do you know? c. Choose a symbol...
Assortment of genes on same chromosome In the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At another gene locus. there is a dominant gene for red eyes and its recessive allele for purple eyes. A female that was heterozygous at both gene loci was mated with a male that is homozygous for both recessive alleles. Knowing this, complete the sentences with the correct terms. 94% crossing over independent assortment...
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