TABLE 1: If you scored 28 females and 22 males, populate the table below in the...
TABLE 1: If you scored 28 females and 22 males, populate the table below in the appropriate phenotype area. Go ahead and leave the date column blank.
|
Phenotype of F1 Progeny |
Date(s) Scored |
No. of Males |
No. of Females |
Total |
|
light brown, unforked, crossveins |
_________ _________ |
0 |
28 |
28 |
|
yellow, forked, crossveinless |
_________ _________ |
22 |
0 |
22 |
|
other (if any) |
_________ _________ |
|||
|
Total |
22 |
28 |
50 |
Conclusions from F1 results:
If the genetic cross was set up correctly, show the phenotype and genotype of the flies that you would expect to see.
Students sometimes see F1 offspring with unexpected phenotypes. What is an unexpected phenotype and discuss how these results may have occurred? What you would need to do to complete experiment if you scored flies with unexpected phenotypes?
Homework Answers
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TABLE 1: If you scored 28 females and 22 males, populate
the table below in the...
please answer the question and explain the concept If you scored 28 females and 22 males...
please answer the question and explain the concept
If you scored 28 females and 22 males Drosophila flys, populate the table below in the appropriate phenotype area. Phenotype of No. of Males No. of Total F1 Progeny Females light brown, unforked, crossveins yellow, forked crossveinless other (if any) Total If the genetic cross was set up correctly, show the phenotype and genotype of the flies that you would expect to see. Students sometimes see F1 Offspring with unexpected phenotypes. What...
1. You cross true breeding yellow crossveinless forked (y, cv, and fare autosomal genes) female flies...
1. You cross true breeding yellow crossveinless forked (y, cv, and fare autosomal genes) female flies (y-y-cv-cv- f-f- XX) to wild type male flies (y+y+ cv+cV+ f+f+ XY). a. What are the genotype(s) of the F1 progeny? b. How many different combinations of those four traits are possible? c. Assuming simple Mendelian recombination, if we do a test cross with the female F1, what fraction of the F2s will have the phenotype: i. yellow crossveinless forked male? ii. wild type...
Q1. Based on a 2014 report from a consortium called GIANT (Genetic Investigation of Anthropometric Traits),...
Q1. Based on a 2014 report from a consortium called GIANT (Genetic Investigation of Anthropometric Traits), it has been reported that there are at least 424 genes that contribute to determining the polygenic trait, height, in humans. Assuming there are two alleles for each gene, how many unique phenotypes would be generated? U ow 424 425 848 849 6.023 x 10 Q2. In fruit flies, the y+ and ct+ genes are located on the X chromosome. Grey body color is...
Can you help me with this problem: 5. In an organism where 2N = 20, how...
Can you help me with this problem:
5. In an organism where 2N = 20, how many unique gametes could be produced due to independent assortment alone (not considering crossing over)? Briefly explain. 6. One of the autosomal loci controlling eye color in fruit flies has two alleles, one for brown eyes and the other for red eyes. Fruit flies from a true-breeding line with brown eyes were crossed with flies form a true-breeding line with red eyes. The Fı...
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"...
You begin working in a genetics lab that uses Drosophila and find that a previous student...
You begin working in a genetics lab that uses Drosophila and
find that a previous student has left behind a bottle of flies that
have a yellow (instead of brown) body with no information about the
mutation that leads to the yellow body color. You first determine
that these flies are true breeding, and then set up some crosses.
Cross 1: You cross yellow females with true breeding wild type
males. In the F1s, all of the females have brown...
Please answer #1-6 and explain and indicate which # you are answering. Thank you so much!!...
Please answer #1-6 and explain and indicate which # you
are answering. Thank you so much!! I updated the size of the
text.
In Drosophila, a male with yellow body is crossed with a female with extra and forked bristles. In the Fl generation both male and female offspring are all completely normal. A F1 female is then crossed with a male with yellow, extra bristle, and forked bristle that is homozygous for all alleles. 1000 progeny are produced in...
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...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
please answer the question and explain the concept
If you scored 28 females and 22 males Drosophila flys, populate the table below in the appropriate phenotype area. Phenotype of No. of Males No. of Total F1 Progeny Females light brown, unforked, crossveins yellow, forked crossveinless other (if any) Total If the genetic cross was set up correctly, show the phenotype and genotype of the flies that you would expect to see. Students sometimes see F1 Offspring with unexpected phenotypes. What...
1. You cross true breeding yellow crossveinless forked (y, cv, and fare autosomal genes) female flies (y-y-cv-cv- f-f- XX) to wild type male flies (y+y+ cv+cV+ f+f+ XY). a. What are the genotype(s) of the F1 progeny? b. How many different combinations of those four traits are possible? c. Assuming simple Mendelian recombination, if we do a test cross with the female F1, what fraction of the F2s will have the phenotype: i. yellow crossveinless forked male? ii. wild type...
Q1. Based on a 2014 report from a consortium called GIANT (Genetic Investigation of Anthropometric Traits), it has been reported that there are at least 424 genes that contribute to determining the polygenic trait, height, in humans. Assuming there are two alleles for each gene, how many unique phenotypes would be generated? U ow 424 425 848 849 6.023 x 10 Q2. In fruit flies, the y+ and ct+ genes are located on the X chromosome. Grey body color is...
Can you help me with this problem:
5. In an organism where 2N = 20, how many unique gametes could be produced due to independent assortment alone (not considering crossing over)? Briefly explain. 6. One of the autosomal loci controlling eye color in fruit flies has two alleles, one for brown eyes and the other for red eyes. Fruit flies from a true-breeding line with brown eyes were crossed with flies form a true-breeding line with red eyes. The Fı...
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"...
You begin working in a genetics lab that uses Drosophila and
find that a previous student has left behind a bottle of flies that
have a yellow (instead of brown) body with no information about the
mutation that leads to the yellow body color. You first determine
that these flies are true breeding, and then set up some crosses.
Cross 1: You cross yellow females with true breeding wild type
males. In the F1s, all of the females have brown...
Please answer #1-6 and explain and indicate which # you
are answering. Thank you so much!! I updated the size of the
text.
In Drosophila, a male with yellow body is crossed with a female with extra and forked bristles. In the Fl generation both male and female offspring are all completely normal. A F1 female is then crossed with a male with yellow, extra bristle, and forked bristle that is homozygous for all alleles. 1000 progeny are produced in...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
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