Homework Answers
Answer 20)
It is given the representation of ABC chromosome. The middle gene is swapped between the homologous chromosome.
For example: If the genotype of individual is ABC/abc
Then B gene is swapped between the chromosome. That's why double cross over products are AbC and aBc.
C is the answer.
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For questions 19-20 In a certain diploid plant, the three loci A, B and C are...
In plants, you want to know whether two loci, P and Q, are linked and if...
In plants, you want to know whether two loci, P and Q, are linked and if so, what their map distance is. You do a testcross with a P/p●Q/q plant and observe the following progeny. Based on this information, what are the genotypes of the parents? Genotype Progeny P/p●Q/q 21 p/p●q/q 25 P/p●q/q 216 p/p●Q/q 238 a) The loci are linked and 4.0 m.u. apart b) the loci are linked and 18.4 m.u. apart c) the loci are linkd and...
Three plant genes, A, B, and C, are linked and occur in the following order. Genetic...
Three plant genes, A, B, and C, are linked and occur in the following order. Genetic distances are given as map units (m.u.): A________10 m.u.______B_____0 m.u.__C The genes underlie the following phenotypes: A/_ = blue flowers, a/a = white flowers B/_ = tall stems, b/b = short stems C/_ = green leaves, c/c = red leaves You cross two individuals with the following genotypes: AbC/AbC x aBc/aBc If you self the resulting F1 the proportion of the offspring that will...
Short Answer 27. An individual has the following genotype. Gene loci (A) and (B) are 20...
Short Answer 27. An individual has the following genotype. Gene loci (A) and (B) are 20 map units apart, which determines their probability of recombination. 1) Indicate all the possible gametes that this individual can produce (with crossing over), 2) Label the gametes that are recombinant and non- recombinant. 3) Calculate the recombination frequency of the recombinant and non-recombinant gametes. The genes are not COMPLETELY linked. bb BB 28. Now imagine the genes are completed linked in #27. 1) What...
Would like help& explanation of how the genetic distances factor in. thanks! Three plant genes, A,...
Would like help& explanation of how the genetic distances
factor in. thanks!
Three plant genes, A, B, and C, are linked and occur in the following order. Genetic distances are given as map units (m.u.): А. 10 m.u. В. Om.u._C The genes underlie the following phenotypes: A/=blue flowers, a/a = white flowers B/_=tall stems, b/b = short stems CI_ = green leaves, c/c = red leaves You cross two individuals with the following genotypes: AbC/ AC x aBc/aBc you self...
please show all work clearly Disc 2, Bb# 3 In the morning glory plant, three genes...
please show all work clearly
Disc 2, Bb# 3 In the morning glory plant, three genes are linked as follows: 20 m.u 30 m.u A morning glory plant with the genotype BB gg DD was crossed to a morning glory plant of genotype bb GG dd. The F1 progeny was testcrossed to a b g d/bg d plant. A. Assume no interference, what genotypic classes will be found in the progeny and the frequencies if there are 1000 progeny? B....
The map of a chromosome interval is A-B = 20 m.u. and B-C = 30 m.u....
The map of a chromosome interval is A-B = 20 m.u. and B-C = 30 m.u. B is in between A and C. If cross overs between A-B and B-C are independent events, how many double crossovers would be expected out of 1000 progeny from the cross ABC/abc × abc/abc? Question 9 options: 40 500 80 60 6 90
17. A diploid plant is a dihybrid for flower color (gene “R”) and leaf size (gene...
17. A diploid plant is a dihybrid for flower color (gene “R”)
and leaf size (gene “L”). Its
phenotype is red flowers and large leaves. This plant is crossed to
a tester plant (which has
white flowers and small leaves). The progeny is as follows:
23 Red, large
25 White, small
230 Red, small
235 White, large
What can be concluded about the linkage relationship of the loci in
the dihybrid parent?
A) Genes R and L are unlinked
B)...
The following map indicates the order of three genes (A, B, and C) on a chromosome...
The following map indicates the order of three genes (A, B, and C) on a chromosome and the number of map units between adjacent gene pairs. What is the expected frequency of the gametes ABC and abc produced by an individual of genotype AbC//aBc. (Assume no interference.) A---->8 m.u.--->B --->24 m.u.--->C 0 69.92% O 0.96% 06.08% 1.92% 022.1%
Can someone tell me how to solve for this? b 6 ın Neurospora, an Iris strain...
Can someone tell me how to solve for this?
b 6 ın Neurospora, an Iris strain makes big as well asgroen colored colomes (gen type bg). It is crossed to a wild-type strain, which makes small and orange-colored colonies (genotype:+ +).The following ordered tetrads of asci were found, with the numbers of each type indicated below each tetrad. VI bg bg VI b g b+ b g bg bg b+ + g Calolate the map distanes h ge be cvbien...
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...
Short Answer 27. An individual has the following genotype. Gene loci (A) and (B) are 20 map units apart, which determines their probability of recombination. 1) Indicate all the possible gametes that this individual can produce (with crossing over), 2) Label the gametes that are recombinant and non- recombinant. 3) Calculate the recombination frequency of the recombinant and non-recombinant gametes. The genes are not COMPLETELY linked. bb BB 28. Now imagine the genes are completed linked in #27. 1) What...
Would like help& explanation of how the genetic distances
factor in. thanks!
Three plant genes, A, B, and C, are linked and occur in the following order. Genetic distances are given as map units (m.u.): А. 10 m.u. В. Om.u._C The genes underlie the following phenotypes: A/=blue flowers, a/a = white flowers B/_=tall stems, b/b = short stems CI_ = green leaves, c/c = red leaves You cross two individuals with the following genotypes: AbC/ AC x aBc/aBc you self...
please show all work clearly
Disc 2, Bb# 3 In the morning glory plant, three genes are linked as follows: 20 m.u 30 m.u A morning glory plant with the genotype BB gg DD was crossed to a morning glory plant of genotype bb GG dd. The F1 progeny was testcrossed to a b g d/bg d plant. A. Assume no interference, what genotypic classes will be found in the progeny and the frequencies if there are 1000 progeny? B....
17. A diploid plant is a dihybrid for flower color (gene “R”)
and leaf size (gene “L”). Its
phenotype is red flowers and large leaves. This plant is crossed to
a tester plant (which has
white flowers and small leaves). The progeny is as follows:
23 Red, large
25 White, small
230 Red, small
235 White, large
What can be concluded about the linkage relationship of the loci in
the dihybrid parent?
A) Genes R and L are unlinked
B)...
The following map indicates the order of three genes (A, B, and C) on a chromosome and the number of map units between adjacent gene pairs. What is the expected frequency of the gametes ABC and abc produced by an individual of genotype AbC//aBc. (Assume no interference.) A---->8 m.u.--->B --->24 m.u.--->C 0 69.92% O 0.96% 06.08% 1.92% 022.1%
Can someone tell me how to solve for this?
b 6 ın Neurospora, an Iris strain makes big as well asgroen colored colomes (gen type bg). It is crossed to a wild-type strain, which makes small and orange-colored colonies (genotype:+ +).The following ordered tetrads of asci were found, with the numbers of each type indicated below each tetrad. VI bg bg VI b g b+ b g bg bg b+ + g Calolate the map distanes h ge be cvbien...
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...
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