3. Fruit flies are organisms commonly used in genetic studies. They reproduce quickly and have several traits that can be measured. One trait is the vestigial wing trait, which is recessive. Most flies have red eyes, but the sepia eye trait is recessive. The image shows a mutant double recessive fly (ggee). A fly that is heterozygous for both traits (GgEe) is crossed with one that has vestigial wings and sepia eyes (ggee). Set up a Punnett square and list the phenotypic ratio of the offspring. How many are normal wings, red eyes? How many are normal wings, sepia eyes? - How many are vestigial wings, red eyes? - How many are vestigial wings, sepia eyes? 4. Show a dihybrid cross for fruit flies. GgEe x GgEe. Be careful when counting the number for each phenotype, it is easy to make a mistake.

3. Fruit flies are organisms commonly used in genetic studies. They reproduce quickly and have several traits that can be measured. One trait is the vestigial wing trait, which is recessive. Most flies have red eyes, but the sepia eye trait is recessive. The image shows a mutant double recessive fly (ggee). A fly that is heterozygous for both traits (GgEe) is crossed with one that has vestigial wings and sepia eyes (ggee). Set up a Punnett square and list the phenotypic ratio of the offspring. How many are normal wings, red eyes? How many are normal wings, sepia eyes? - How many are vestigial wings, red eyes? - How many are vestigial wings, sepia eyes? 4. Show a dihybrid cross for fruit flies. GgEe x GgEe. Be careful when counting the number for each phenotype, it is easy to make a mistake.

Name: 3. Fruit flies are organisms commonly used in genetic studies. They r
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Description: 3. Fruit flies are organisms commonly used in genetic studies. They reproducequickly and have several traits that can be measured. One trait is the vestigial wingtrait, which is recessive. Most flies have red eyes, but the sepia eye trait is recessi

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 1TYK: The dominant C allele of a gene that controls color in corn produces kernels with color; plants...

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6. There are two enzymes LDH1 and LDH2. The gene that encodes this enzyme is X-linked. You extract the enzyme from different cells in several people and carry out electrophoresis. Give the genotypes for each person Draw the banding pattern that you would expect in the gel. Male with Male with Female Female Heterozygous LDH1 gene homozygous female LDH2 homozygous for LDH2 for LDH1
4. A male rabbit with genotype GgBb x with a female rabbit with genotype ggbb. ● The female only has one possible combination (gb) and her gametes are completed on the Punnett square below. To set up the Punnett square, use the "foil" method to determine the alleles present in the gametes. The image shown below will help you set up the male rabbit's genotype at the top of the square. ● Show the Punnett square and the expected offspring and their proportions. gb gb G g Bb gb gb How many out of 16 are: Grey, black eyed Grey, red eyed White, black eyed White, red eyed
1. In pea plants, yellow color (Y) is dominant over green color (y). A yellow-colored pea plant is crossed with a green-colored pea plant. Half of their offspring is yellow-colored while the other half is green-colored.What is the genotype of the yellow-colored parent? YY O Yy yy The genotype cannot be determined. 2. A scientist discovered an unknown organism in a tropical rainforest. The organism has been identified to possess the following characteristics: (1) multicellular at some point of its life cycle; (2) feeds on decaying organic matter; and (3) has a cell wall made of chitin.Which Kingdom does the unknown organism likely belong to? Kingdom Animalia Kingdom Plantae Kingdom Fungi Kingdom Protista 3. Which statement about ferns is TRUE? Ferns are unicellular organisms. Ferns are nonvascular plants. O Ferns have spores as reproductive structures. Ferns are capable of secondary growth.
4. In guinea pigs, the genes for coat texture and coat colour are found on separate chromosomes. The allele for rough coat is dominant to the allele for smooth coat. The allele for black coat is dominant to the allele for white coat. A black guinea pig with a rough coat was crossed with a white guinea pig with a rough coat. The cross was repeated on a number of occasions and the phenotypes of the offspring were as follows: 28 rough and black coats 31 rough and white coats 11 smooth and black coats 10 smooth and white coats Complete the genetic diagram to explain this cross. Use the following symbols to represent the alleles: R = rough B = black Parental phenotypes: rough and black coat Parental genotypes: Gametes: Offspring genotypes: . Offspring phenotypes: . Expected phenotypic ratio: r = smooth b = white X rough and white coat
3. Short-tailed pup distribution. In mice, the dominant T allele results in a short tail. Homozygous T/T genotype is lethal, which means mouse embryos with this genotype die before they are born. Homozygous t/t is normal, with normal tail. A cross between two short-tailed mice produces a litter of 5 pups. a). What are the genotype(s) of the two short-tailed mice used in the cross? b). What are the possible genotypes and phenotypes of the 5 pups? What are their perspective ratio?
2. In corn the genes for tassel length (alleles T and t) and rust resistance (alleles R and r) are known to be on separate chromosomes. In the course of a routine mating check experiment, a breeder got the following results upon crossing T/t:R/r with a double recessive strain (t/t/r): Number of progeny genotype T/t; R/r t/t; r/r T/t; r/r t/t; R/r In addition to these data she noted that the cobs contain only about 50% of the expected kernels. Note that in corn, each kernel is the result of one mating or can be considered one progeny. Hence 50% of the matings are not producing viable offspring. a. Based on the location of these genes on separate chromosomes what is the 98 104 3 5 expected result? b. Suggest a hypothesis of a genetic process that could be used to explain the potential karyotype of one of these parents. c. What are the actual genotypes of the parents? d. Draw a diagram (hand drawn diagrams are fine just scan the image and insert it into your exam as picture) showing the…
10. You are testing Drosophila for the following recessive genes: "spinless" without bristles on the wings; "claret" dark brown eyes; and "hairless" without thoracic bristles. You do a test cross with a heterozygous female for all three genes, and you get the following progeny: spineless 82wild 380claret, spinless 130claret 18claret, hairless 80hairless, claret, spinless 323hairless 140hairless, spinless 12 The correct distance between sp - cl genes is: a. 0.25 umb. 0.36 umc. 41 umd. 25 ume. 16 um 11. You are testing Drosophila for the following recessive genes: "spinless" without bristles on the wings; "claret" dark brown eyes; and "hairless" without thoracic bristles. You do a test cross with a heterozygous female for all three genes, and you get the following progeny: spineless 82wild 380claret, spinless 130claret 18claret, hairless 80hairless, claret, spinless 323hairless 140hairless, spinless 12 The correct distance between sp - hl genes is: a. 0.25 umb. 0.36 umc. 41 umd. 25…
1. Choose all that apply. Choose all of the TRUE statements below. Parental offspring inherit the combination of phenotypes of the original parents. The closer two genes are on the same chromosome, the more likely the alleles will remain linked. Two genes that are on the same chromosome are in the same linkage group. Crossing over between two genes on the same chromosome can unlink and then relink the alleles.
2. The following is a pedigree of a family in which a rare form of X-linked colorblindness is found (filled-in symbols). II 2 II 3 4 a. Label the genotypes of as many family members as the available information permits. Remember that this gene is located on the X-chromosome when writing out genotypes. b. Is the colorblindness trait recessive or dominant? Explain how you know.
3. An individual heterozygous for the following three alleles (XYZ) was testcrossed to a homozygous recessive individual (xyz). The following offspring were generated: XYZ 200 XYZ 210 XYZ 215 Xvz 205 XYZ 80 XVZ 90 XYZ 85 XYZ 95 M. How many genes are linked? N. Which allele groups are parental? O. What do the other groups represent? P. What are the distances between the linked genes?
1. You are given a female F1 of unknown genotype. You cross the female fly to a homozygous male that has forked bristles and malformed eyes. The offspring of the cross is shown below: (Define symbols for your traits) Phenotype Forked bristles, normal eyes 752 Number Genotype Forked bristles, malformed 56 eyes Malformed eyes, normal bristles Normal eyes, normal bristles 820 64 a. What are the genotypes of the offspring? b. Based on the progeny, what were the genotypes of the F1 parents? What is the distance between for and mal?
7. In pea plants, the dominant allele for flower color is yellow (Y), and the recessive allele is white (y). If a homozygous dominant (YY) yellow-flowered plant is crossed with a heterozygous (Yy) yellow flowered plant what will be the possible genotypes and phenotypes of the offspring? Possible genotypes: Possible phenotypes: