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N) What is the expected number of double-recombinant offspring? O) Why is the expected number not equivalent to the observed number?

N) What is the expected number of double-recombinant offspring? O) Why is the expected number not equivalent to the observed number?

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In monkeys, the D allele produces a calm personality, while the recessive allele, d, results in a dithery personality. The F allele results in five toes while the recessive, f allele, produces only four toes. Finally, the G allele results in smooth fur, while the recessive g allele results in grizzled fur. A calm five-toes smooth true breeding monkey is mated with a dithery four- toed grizzled monkey. The resulting F1 offspring were test-crossed with dithery four-toed grizzled monkey and the phenotype of the resulting offspring is listed below Personality Toes Fur Five Five Four Four Five Five Four Four Calm Calm Calm Calm Dithery Dithery Dithery Dithery Smooth Grizzled Smooth Grizzled Smooth Grizzled Smooth Grizzled Total Observed Number B) What are the parental phenotypes? 650 120 80 6 4 72 118 593 1643 A) What is the genotype of gametes produced by the individuals used to generate the F1 monkey? mob avizecom esg 3.0) (A Tuot odt sell sasto ross ni C) If these genes are unlinked, what is the expected ratio of offspring in the testcross listed above? D) How can you tell that these genes are linked? E) What is the total number of observed non-recombinants? F) What is the total number of observed recombinants in consequence of single crossover?
Transcribed Image Text:In monkeys, the D allele produces a calm personality, while the recessive allele, d, results in a dithery personality. The F allele results in five toes while the recessive, f allele, produces only four toes. Finally, the G allele results in smooth fur, while the recessive g allele results in grizzled fur. A calm five-toes smooth true breeding monkey is mated with a dithery four- toed grizzled monkey. The resulting F1 offspring were test-crossed with dithery four-toed grizzled monkey and the phenotype of the resulting offspring is listed below Personality Toes Fur Five Five Four Four Five Five Four Four Calm Calm Calm Calm Dithery Dithery Dithery Dithery Smooth Grizzled Smooth Grizzled Smooth Grizzled Smooth Grizzled Total Observed Number B) What are the parental phenotypes? 650 120 80 6 4 72 118 593 1643 A) What is the genotype of gametes produced by the individuals used to generate the F1 monkey? mob avizecom esg 3.0) (A Tuot odt sell sasto ross ni C) If these genes are unlinked, what is the expected ratio of offspring in the testcross listed above? D) How can you tell that these genes are linked? E) What is the total number of observed non-recombinants? F) What is the total number of observed recombinants in consequence of single crossover?
G) What is the total number of observed recombinants in consequence of double crossover? H) What statistical test would you use to test for linkage? Chi square. I) What is the order of these genes on the chromosomes? K) Calculate the distance between all 3 genes (partial credit awarded if the work is shown) K-1) distance between gene 1 and 2: K-2) distance between gene 2 and 3: K-3) distance between gene 1 and 3: L) Draw a map of your results with genes in order M) What is the expected frequency of double-recombinant offspring? N) What is the expected number of double-recombinant offspring? O) Why is the expected number not equivalent to the observed number?
Transcribed Image Text:G) What is the total number of observed recombinants in consequence of double crossover? H) What statistical test would you use to test for linkage? Chi square. I) What is the order of these genes on the chromosomes? K) Calculate the distance between all 3 genes (partial credit awarded if the work is shown) K-1) distance between gene 1 and 2: K-2) distance between gene 2 and 3: K-3) distance between gene 1 and 3: L) Draw a map of your results with genes in order M) What is the expected frequency of double-recombinant offspring? N) What is the expected number of double-recombinant offspring? O) Why is the expected number not equivalent to the observed number?
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