Linked GenesWhile working with a type of beetle that is normally smooth and large, you discover two mutations that lead to the recessive phenotypes, bumpy and small, respectively. For the body type (i.e., smooth or bumpy) use S or s to designate the alleles. For the size (i.e., large or small) use L or l to designate the alleles. You cross two true-breeding parents to get all F1 beetles that are large and smooth. You cross the F1 to true-breeding small, bumpy beetles and get: 228 large and smooth, 19 small and smooth, 16 large and bumpy, 237 small and bumpy. What were the genotypes and phenotypes of the two parental beetles (P generation)?Calculate the distance in cM between the S and L genes, using the information from the cross above. Now draw a linear genetic map of these two genes. Another gene for beetle body color, gene W, is found to be 5 cM from the S gene. Indicate the TWO places where this gene may fall in relation to the other two genes on the linear genetic map you have drawn. What method could help you figure out exactly where this gene lies on this map? (Insert your map below for credit.)

They tell us that crosses with the true breeding parents produce both large and smooth F1 flies.…

Answered: Linked Genes While working with a type…

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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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Linked Genes

While working with a type of beetle that is normally smooth and large, you discover two mutations that lead to the recessive phenotypes, bumpy and small, respectively.

For the body type (i.e., smooth or bumpy) use S or s to designate the alleles.

For the size (i.e., large or small) use L or l to designate the alleles.

You cross two true-breeding parents to get all F1 beetles that are large and smooth. You cross the F1 to true-breeding small, bumpy beetles and get: 228 large and smooth, 19 small and smooth, 16 large and bumpy, 237 small and bumpy. What were the genotypes and phenotypes of the two parental beetles (P generation)?
Calculate the distance in cM between the S and L genes, using the information from the cross above.

Now draw a linear genetic map of these two genes. Another gene for beetle body color, gene W, is found to be 5 cM from the S gene. Indicate the TWO places where this gene may fall in relation to the other two genes on the linear genetic map you have drawn. What method could help you figure out exactly where this gene lies on this map? (Insert your map below for credit.)

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