Homework Answers
NCO - 0% R
SCO - 50% R
DCO(2- strand) - 0% R
DCO(3- strand) - 50% R
DCO(3- strand) - 50% R
DCO(4- strand) - 100% R
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Required information The recombination frequency between genes that are located on different chromosomes is 50%, a...
1. 2. 13. Which statement explains why the recombination frequency between two genes is always less...
1.
2.
13.
Which statement explains why the recombination frequency between two genes is always less than 50%? Recombination cannot be more than 50% because chromosomes are only 50 map units in length. The genotype of the F, gametes will always be 50% parental gametes and 50% recombinant gametes. Genes with a recombination frequency near 50% are unlinked and have an equal likelihood of being inherited together or separately. F1 gametes always have 50% of their alleles from each parental...
You see a recombination frequency of 50% between two genes. Which of the following possibilities can...
You see a recombination frequency of 50% between two genes. Which of the following possibilities can you exclude? That the genes are located close together on the same chromosome That the genes are on different chromosomes O That the genes are assorting independently That the genes are located on the same chromosome, but very far apart Meiosis contributes to genetic diversity by: o Reducing the number of chromosomes for karyogamy (fusion of nuclei) with another gamete O Recombining homologous chromosomes...
You see a recombination frequency of 0.0313%), what does this indicate? That the genes are located...
You see a recombination frequency of 0.0313%), what does this indicate? That the genes are located close together on the same chromosome That the offspring has a large number of non-parental phenotypes That the genes are on different chromosomes That the genes are assorting independently That the genes are located on the same chromosome, but very far apart
Which of these statements is incorrect? Syntenic genes are located on the same chromosome. Independent assortment...
Which of these statements is incorrect? Syntenic genes are located on the same chromosome. Independent assortment results in recombinant chromosomes. You can reliably predict the relative genetic distance from genes’ physical distance on a chromosome. Linked genes are always syntenic. What is the relative genetic distance between two linked genes if the recombination frequency is 0.49? 0.49 cM 4.9 cM 49 cM 490 cM What statement best explains the distortion in Mendelian ratios observed by Bateson & Punnett in 1905?...
Which of the following statement(s) are true? Morgan traced the eye colour gene in flies to...
Which of the following statement(s) are true? Morgan traced the eye colour gene in flies to the X chromosome. 50% recombinant progeny are observed for two unlinked genes, which is due to the independent assortment of homologous chromosomes in metaphase 1 In very long chromosomes > 50% recombination can be observed. Crossing over between homologous, parental chromosomes is the mechanism of breaking up linkage of two genes to form recombinant chromosomes. The frequency of recombination is directly proportional to the...
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes...
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes I,, Ib, Ila, and Ilb. Submetacentric chromosomes have their centro nere abou midway between the telomere and middle of the chromosome as shown. Chromosomes Ia and I, are homologues and chromosomes II, and Ilb are homologues. Allele R is located on the p arm (short arm) of chromosome of chromosome la, and allele r is located at the same position on chromosome lb. Allele...
1. A genetic cross in which the inheritance of two traits is observed is called a...
1. A genetic cross in which the inheritance of two traits is observed is called a A) Dihybrid cross. B) Monohybrid cross C) Backeross D) Testcross 2. For single crossovers, the frequency of recombinant gametes is half the frequency of crossing over because A) A testeross between a homozygous and heterozygote produces 1/2 heterozygous and 1/2 homozygous progeny. B) The frequency of recombination is always 50%. C) Each crossover takes place between only two of the four chromatids of a...
Question #1: Thomas Hunt Morgan used genetic mapping to map out genes on the chromosomes. He...
Question #1: Thomas Hunt Morgan used genetic mapping to map out genes on the chromosomes. He found that alleles that are not genetically linked, can still be on the same chromosome. Alleles A and Z are not genetically linked (recombination frequency is 50%) If the recombination frequency between different alleles are: AZ: 50% G-Z: 50% A-G: 8% T-D: 24% G-T: 39% TZ: 50% A-T: 47% DZ: 25% A. Are A and Z on the same chromosome? Why or why not?...
Multiple choice: The measured distance between genes D and E in a two-point testcross is 50...
Multiple choice: The measured distance between genes D and E in a two-point testcross is 50 map units. Where are genes D and E in relation to each other? D and E are on different homologous chromosomes. D and E are on the same chromosome, at least 50 map units apart. D and E are on the same chromosome, exactly 50 map units apart. D and E are on the same chromosome, less than 50 map units apart. A) 1...
Please answer both Consider the following cross: Aa Bb Cc Dd x Aa bb Cc Dd....
Please answer both
Consider the following cross: Aa Bb Cc Dd x Aa bb Cc Dd. Assuming complete dominance and independent assortment, determine what proportion of the progeny will be homozygous dominant for all three genes? O 1/128 O 27/128 00 O 1/64 O 1/256 Which of the following statements is true? The observed frequency of recombination of two genes that are far apart from each other has a maximum value of 100% All of the traits that Mendel studied...
1.
2.
13.
Which statement explains why the recombination frequency between two genes is always less than 50%? Recombination cannot be more than 50% because chromosomes are only 50 map units in length. The genotype of the F, gametes will always be 50% parental gametes and 50% recombinant gametes. Genes with a recombination frequency near 50% are unlinked and have an equal likelihood of being inherited together or separately. F1 gametes always have 50% of their alleles from each parental...
You see a recombination frequency of 50% between two genes. Which of the following possibilities can you exclude? That the genes are located close together on the same chromosome That the genes are on different chromosomes O That the genes are assorting independently That the genes are located on the same chromosome, but very far apart Meiosis contributes to genetic diversity by: o Reducing the number of chromosomes for karyogamy (fusion of nuclei) with another gamete O Recombining homologous chromosomes...
You see a recombination frequency of 0.0313%), what does this indicate? That the genes are located close together on the same chromosome That the offspring has a large number of non-parental phenotypes That the genes are on different chromosomes That the genes are assorting independently That the genes are located on the same chromosome, but very far apart
Which of the following statement(s) are true? Morgan traced the eye colour gene in flies to the X chromosome. 50% recombinant progeny are observed for two unlinked genes, which is due to the independent assortment of homologous chromosomes in metaphase 1 In very long chromosomes > 50% recombination can be observed. Crossing over between homologous, parental chromosomes is the mechanism of breaking up linkage of two genes to form recombinant chromosomes. The frequency of recombination is directly proportional to the...
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes I,, Ib, Ila, and Ilb. Submetacentric chromosomes have their centro nere abou midway between the telomere and middle of the chromosome as shown. Chromosomes Ia and I, are homologues and chromosomes II, and Ilb are homologues. Allele R is located on the p arm (short arm) of chromosome of chromosome la, and allele r is located at the same position on chromosome lb. Allele...
1. A genetic cross in which the inheritance of two traits is observed is called a A) Dihybrid cross. B) Monohybrid cross C) Backeross D) Testcross 2. For single crossovers, the frequency of recombinant gametes is half the frequency of crossing over because A) A testeross between a homozygous and heterozygote produces 1/2 heterozygous and 1/2 homozygous progeny. B) The frequency of recombination is always 50%. C) Each crossover takes place between only two of the four chromatids of a...
Question #1: Thomas Hunt Morgan used genetic mapping to map out genes on the chromosomes. He found that alleles that are not genetically linked, can still be on the same chromosome. Alleles A and Z are not genetically linked (recombination frequency is 50%) If the recombination frequency between different alleles are: AZ: 50% G-Z: 50% A-G: 8% T-D: 24% G-T: 39% TZ: 50% A-T: 47% DZ: 25% A. Are A and Z on the same chromosome? Why or why not?...
Please answer both
Consider the following cross: Aa Bb Cc Dd x Aa bb Cc Dd. Assuming complete dominance and independent assortment, determine what proportion of the progeny will be homozygous dominant for all three genes? O 1/128 O 27/128 00 O 1/64 O 1/256 Which of the following statements is true? The observed frequency of recombination of two genes that are far apart from each other has a maximum value of 100% All of the traits that Mendel studied...
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