Homework Answers
These results are due to criss cross pattern of inheritance. Sex linked genes show criss cross pattern of inheritance I.e., transmission of a gene from mother to son or from father to daughter.
Thus males receives dominant allele from mother in first cross ( therefore red eyed) and in second cross it receives recessive allele for white colour from her mother.
Genotype of white eyed male is: XwYY
Genotype of red eyed male is: Xw+Y
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3. Ho w would you explain the appearance of 3 white-eyed males along with the 1,237...
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...
Experimental technique: Reciprocal crosses
1)When Gregor Mendel conducted his genetic experiments with pea plants, he observed that a trait’s inheritance pattern was the same regardless of whether the trait was inherited from the maternal or paternal parent. Mendel made these observations by carrying out reciprocal crosses: For example, he first crossed a female plant homozygous for yellow seeds with a male plant homozygous for green seeds and then crossed a female plant homozygous for green seeds with a male plant homozygous for yellow seeds.Unlike...
Genetics questions, i need help! 1) For the Drosophila red/white cross, you crossed red females and...
Genetics questions, i need help!
1) For the Drosophila red/white cross, you crossed red females and white males (w'w, wy). a) Draw the Punnett Square for this cross (F1). What is the ratio of red females:red males? b) Suppose in the F1 generation, you observed 70 red females and 30 red males. Do a Chi- Square Test to test the hypothesis of the ratio you found in part (a) above. Do you accept or reject the hypothesis? c) Draw the...
figure 4.13 *22. When Bridges crossed white-eyed females with red-eyed males, he obtained a few red-eyed...
figure 4.13
*22. When Bridges crossed white-eyed females with red-eyed males, he obtained a few red-eyed males and white-eyed females (see Figure 4.13). What types of offspring would be produced if these red-eyed males and white-eyed females were crossed with each other? P generation White-eyed female Red-eyed male Separation of XS (90% of time) Nondisjunction of Xs (10% of time) Cametes y Fertilization F, generation Sperm XXY X"YY Red-eyed female White-eyed male |XWY Progeny resulting from separation of Xs X*X"...
1. What would be the phenotype for each of the following birds, including their gender? Color...
1. What would be the phenotype for each of the following birds, including their gender? Color Gender Bb ZZi: - bb ZiZi: - BB ZZ: - bb ZW: - Bb ZiW: - 2. Using the phenotypes of the parents and of the progeny given in table 1, determine the genotype of each parent in the first nest. Male Female 3. Using the phenotypes of the parents and of the progeny given in table 2, determine the genotype of each parent...
6. In Cross 1, a yellow eyed, long wing fruit fly from a pure breeding strain...
6. In Cross 1, a yellow eyed, long wing fruit fly from a pure breeding strain is mated to a red eye, short wing fruit fly from a pure breeding strain. All of their offspring (F1) had red eyes and long wings. In Cross 2, one of the F1 offspring is mated to a fly with yellow eyes and short wings, and this cross gave the following F2 population: 194 flies with long wings and red eyes, 796 flies with...
Choose from these answers for questions 29 - 32: A. 1 B. 1/3 C. 2/3 D....
Choose from these answers for questions 29 - 32: A. 1 B. 1/3 C. 2/3 D. 14 E. % G. none of the mice F. all of the mice 29. You mate 2 red mice with each other. Of the live offspring, how many would be red? 30. You mate 2 red mice with each other. Of the live offspring, how many would be black? 31. You mate a red mouse with a black mouse. Of the live offspring, how...
B. Geneticists have discovered that some flies have white eyes and others red eyes. The difference...
B. Geneticists have discovered that some flies have white eyes and others red eyes. The difference in eye color is due to inheritance of one gene. Two true-breeding flies are mated, with the female white-eyed and the male red-eyed. The F1 are 1/2 red eyed and female, and 12 white-eyed and male. (There are no white-eyed females, or red- eyed males.) 11. The F2 includes: 54 red-eye females 42 white-eyed females 48 red-eyed males 56 white-eyed males Phenotypes d (o-edd/e...
for questions 25 - 26 using the letters below. This set of questions refers to Mendel’s...
for
questions 25 - 26 using the letters below. This set of questions
refers to Mendel’s plants with either Purple flowers or White
flowers A. PP B. Pp C. pp D. PP or Pp E. Pp or pp F. PP or pp G.
none of these answers 25. A purple flowering pea plant of unknown
genotype would be best described by which answer above 26. To
determine the genotype of a purple flowering plant of unknown
genotype, you would cross...
Bants and white fnowered plants show incomplete dominance ie the allele for white flowers are inc...
Bants and white fnowered plants show incomplete dominance ie the allele for white flowers are incompletely dominant and it is possible to get flowered plants b. Suppose that red flowered plants R for red flowers and the allele R' flowers are pink flowered plants, cross a pink another p nowered plant with another pink flowered plant using a Punnett square Complete the following What is the genotype of each pink fowered parent plant was it possible to get white flowered...
Genetics questions, i need help!
1) For the Drosophila red/white cross, you crossed red females and white males (w'w, wy). a) Draw the Punnett Square for this cross (F1). What is the ratio of red females:red males? b) Suppose in the F1 generation, you observed 70 red females and 30 red males. Do a Chi- Square Test to test the hypothesis of the ratio you found in part (a) above. Do you accept or reject the hypothesis? c) Draw the...
figure 4.13
*22. When Bridges crossed white-eyed females with red-eyed males, he obtained a few red-eyed males and white-eyed females (see Figure 4.13). What types of offspring would be produced if these red-eyed males and white-eyed females were crossed with each other? P generation White-eyed female Red-eyed male Separation of XS (90% of time) Nondisjunction of Xs (10% of time) Cametes y Fertilization F, generation Sperm XXY X"YY Red-eyed female White-eyed male |XWY Progeny resulting from separation of Xs X*X"...
6. In Cross 1, a yellow eyed, long wing fruit fly from a pure breeding strain is mated to a red eye, short wing fruit fly from a pure breeding strain. All of their offspring (F1) had red eyes and long wings. In Cross 2, one of the F1 offspring is mated to a fly with yellow eyes and short wings, and this cross gave the following F2 population: 194 flies with long wings and red eyes, 796 flies with...
Choose from these answers for questions 29 - 32: A. 1 B. 1/3 C. 2/3 D. 14 E. % G. none of the mice F. all of the mice 29. You mate 2 red mice with each other. Of the live offspring, how many would be red? 30. You mate 2 red mice with each other. Of the live offspring, how many would be black? 31. You mate a red mouse with a black mouse. Of the live offspring, how...
B. Geneticists have discovered that some flies have white eyes and others red eyes. The difference in eye color is due to inheritance of one gene. Two true-breeding flies are mated, with the female white-eyed and the male red-eyed. The F1 are 1/2 red eyed and female, and 12 white-eyed and male. (There are no white-eyed females, or red- eyed males.) 11. The F2 includes: 54 red-eye females 42 white-eyed females 48 red-eyed males 56 white-eyed males Phenotypes d (o-edd/e...
for
questions 25 - 26 using the letters below. This set of questions
refers to Mendel’s plants with either Purple flowers or White
flowers A. PP B. Pp C. pp D. PP or Pp E. Pp or pp F. PP or pp G.
none of these answers 25. A purple flowering pea plant of unknown
genotype would be best described by which answer above 26. To
determine the genotype of a purple flowering plant of unknown
genotype, you would cross...
Bants and white fnowered plants show incomplete dominance ie the allele for white flowers are incompletely dominant and it is possible to get flowered plants b. Suppose that red flowered plants R for red flowers and the allele R' flowers are pink flowered plants, cross a pink another p nowered plant with another pink flowered plant using a Punnett square Complete the following What is the genotype of each pink fowered parent plant was it possible to get white flowered...
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