Amanda N. Wavrin Week 2

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Objective

• We are determining how color is inhertited in these test flowers.
• We are working with a single gene system.
• Alleles are versions of genes.

observations

• When crossing a pure-breeding green (Green-1) flower with a pure-breeding white flower all of the off spring were green. This would indicate that green is dominant.
• When I self crossed one of the previous off spring flowers, it resulted in 19 green flowers and 7 whte flowers. This shows that self crossed flower was heterzygous. When I repeated this cross a second time, it resulted in 4 white flowers and 15green flowers.
• When I continued to mutate one of the white flowers(2-9), all of the off spring were white.
• I mutated a white flower (2-21) again and it resulted in all white off spring.
• I mutated a white flower (2-2), resulted in all white off spring.
• I mutated a white flower (2-14)for the fourth time, resulted in all white off spring.
• When I mutated white flower 2-17 the results were 14 white flowers, one mutant yellow flower and one mutnatred flower.
• When I crossed the Yellow and Red mutants, it resulted in 6 orange mutants, 10 White, 8 Red, and 4 Yellow. When I repeated this cross, it resulted in 4 Yellow mutants, 4 Red, 7 orange, and 5 White.
• Crossed Green-2 and Mutated red, resulted in 7 Purple, 9 Orange, 8 Yellow, 4 Blue.
• When self crossed purple flower, resultd in 9 purple flowers,5 red flowers, 5 blue flowers.
• Self crossed another purple flower, resulted in 9 purple flowers, 8 blue flowers,8 red.
• Crossed Blue and Purple, resulted in 10 purple, 14 blue.
• Crossed purple and Gree2, resulted in 9 Purple, 4 Blue,3 Orange, 4 Green.
• Crossed orange and white, resulted in 13 Orange, 7 red.
• Self crossed blue, all blue off spring. Repeated.
• Crossed two Blue, all blue off spring. Repeated.
• Self cross green2- result in blue, yellow, and green. Codominance.
• Crossed Green1 and Red, resulted in 15 black flowers and 7 green flowers.
• Crossed prebreeding red and green1, resulted in all black. Incomplete dominance.

Answers to Aipotu Genetics Questions

A) Phenotypes and Corresponding Genotypes

• These are the different alleles: Cg, Cw, Cr, Cb, Cy. Different combinations of the alleles produce different colors:
• Green1- CgCg
• White- CwCw
• Red- CrCr
• Blue- CbCb
• Orange- CrCy
• Yellow- CyCy
• Purple- CrCb
• Black- CrCg
• Green2- CyCb

B)

• Green1 is dominant to blue
• Green1 is dominant to white
• Green1 is dominant to gree2
• Green1 is dominant to yellow
• Green1 and red exhibit incomplete dominance
• White is recessive
• Green and blue are codominant

C) Table of colors produced by allelic combinations

Cg Cw Cr Cb Cy Cg Green1 Green1 Black Green1 Green1 Cw Green1 White Red Blue Yellow Cr Black Red Red Purple Orange Cb Green1 Blue Purple Blue Green2 Cy Green1 Yellow Orange Green2 Yellow