Using the data listed above, construct a gene map between the genes R,S, and F. Calculate map unit values between all genes, and draw or create a map diagram of the relationship between the genes.

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You are studying three genes, which you know are on chromosome 3 of the tomato: R, S, and
F. Each gene has two alleles:
R causes red flesh; r causes yellow flesh.
S causes smooth skin; s causes fuzzy skin.
F causes round shape; f causes oblate shape.
You mate a tomato plant with red flesh, smooth skin, and oblate shape with a tomato with
yellow flesh, fuzzy skin, and round shape.
All of the F₁ offspring have red flesh, smooth skin, and round shape.
You conduct a test cross and mate F₁ plants with plants possessing the recessive traits (yellow
flesh, fuzzy skin, and oblate shape).
You count and classify the following offspring of the test cross:
red, smooth, oblate 382
yellow, fuzzy, round.
379
red, fuzzy, oblate
69
yellow, smooth, round
67
red, fuzzy, round
48
44
6
5
yellow, smooth, oblate
yellow, fuzzy, oblate
red, smooth, round
Using the data listed above, construct a gene map between the genes R,S, and F. Calculate
map unit values between all genes, and draw or create a map diagram of the relationship
between the genes.
You can use computer symbols to represent the map (letters/dashes), you can draw a map by
hand and upload a picture, or you could use a program such as Powerpoint to make a map
diagram; include the allele symbols and map distances with proper units on the map diagram.
Show your work for how you determined map units for all three genes.
Transcribed Image Text:You are studying three genes, which you know are on chromosome 3 of the tomato: R, S, and F. Each gene has two alleles: R causes red flesh; r causes yellow flesh. S causes smooth skin; s causes fuzzy skin. F causes round shape; f causes oblate shape. You mate a tomato plant with red flesh, smooth skin, and oblate shape with a tomato with yellow flesh, fuzzy skin, and round shape. All of the F₁ offspring have red flesh, smooth skin, and round shape. You conduct a test cross and mate F₁ plants with plants possessing the recessive traits (yellow flesh, fuzzy skin, and oblate shape). You count and classify the following offspring of the test cross: red, smooth, oblate 382 yellow, fuzzy, round. 379 red, fuzzy, oblate 69 yellow, smooth, round 67 red, fuzzy, round 48 44 6 5 yellow, smooth, oblate yellow, fuzzy, oblate red, smooth, round Using the data listed above, construct a gene map between the genes R,S, and F. Calculate map unit values between all genes, and draw or create a map diagram of the relationship between the genes. You can use computer symbols to represent the map (letters/dashes), you can draw a map by hand and upload a picture, or you could use a program such as Powerpoint to make a map diagram; include the allele symbols and map distances with proper units on the map diagram. Show your work for how you determined map units for all three genes.
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