working type beetie that normally smooth, large and you discover 3 mutations that lead to the recessive phenotypes bumpy, small and grey, respectively. You cross true-breeding smooth white beetles to true-breeding bumpy grey beetles and get all smooth white F1 beetles. Then, your cross the F1 beetles to true- breeding bumpy grey beetles and, after analyzing 800 F2s, calculate a map distance of 5 cM between the smoothness and color loci. a. What are the 4 phenotypic classes you get in the F2? Fill in the table below. For the body type (i.e., smooth or bumpy), use S or s to designate the alleles. For the color (ie., white or grey), use W or w to designate the alleles. For the size (i.e., large or small), use L or l to designate the alleles. Genotypic class Phenotypic class Number of this phenotype 380 380 20

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3. While working with a type of beetle that is normally smooth, large and white, you
discover 3 mutations that lead to the recessive phenotypes bumpy, small and grey,
respectively. You cross true-breeding smooth white beetles to true-breeding bumpy grey
beetles and get all smooth white F1 beetles. Then, your cross the F1 beetles to true-
breeding bumpy grey beetles and, after analyzing 800 F2s, calculate a map distance of 5
cM between the smoothness and color loci.
a. What are the 4 phenotypic classes you get in the F2? Fill in the table below.
For the body type (i.e., smooth or bumpy), use S or s to designate the alleles.
For the color (i.e., white or grey), use W or w to designate the alleles.
For the size (i.e., large or small), use L or 1 to designate the alleles.
Genotypic class
Phenotypic class
Number of this phenotype
380
380
20
20
b. You cross 2 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 2 parental beetles (P generation)? Construct a table:
Transcribed Image Text:3. While working with a type of beetle that is normally smooth, large and white, you discover 3 mutations that lead to the recessive phenotypes bumpy, small and grey, respectively. You cross true-breeding smooth white beetles to true-breeding bumpy grey beetles and get all smooth white F1 beetles. Then, your cross the F1 beetles to true- breeding bumpy grey beetles and, after analyzing 800 F2s, calculate a map distance of 5 cM between the smoothness and color loci. a. What are the 4 phenotypic classes you get in the F2? Fill in the table below. For the body type (i.e., smooth or bumpy), use S or s to designate the alleles. For the color (i.e., white or grey), use W or w to designate the alleles. For the size (i.e., large or small), use L or 1 to designate the alleles. Genotypic class Phenotypic class Number of this phenotype 380 380 20 20 b. You cross 2 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 2 parental beetles (P generation)? Construct a table:
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