Chris Rhodes Week 2: Difference between revisions
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==Methods== | ==Methods== | ||
#To determine homo- or heterozygous alleles of the parental generation or the original four strands I began by self-crossing each flower. Homozygous crosses would yield only the original color where heterozygous crosses would yield 2 or more colors. | |||
#To determine a scale of dominance among the parental generation and help uncover the different alleles responsible for each color I inter-crossed all the parental flowers.(See Results: Parental Crosses) | |||
#To isolate True-breeding flowers for more accurate future dominance tests I self-crossed select progeny of the F1 generation of the Parental crosses. I then self-crossed select progeny from the F2 generation until a pure F3 generation was created for each color(Red, Blue, Yellow). These True-breeding strains were stored in the Greenhouse.(See Note: Green and White had already been established as true-breeding | |||
# | |||
==Results== | ==Results== | ||
'''Parental Crosses''' | '''Parental Crosses''' | ||
*Cross between Red and Red flowers yields: 20 Red and 7 White | |||
*Cross between Green-1 and Green-1 flowers yields: 23 Green | |||
*Cross between Green-2 and Green-2 flowers yields: 12 Green, 6 Yellow, and 5 Blue | |||
*Cross between White and White flowers yields: 17 White | |||
*Cross between Green-1 and White flower yields: 21 Green | *Cross between Green-1 and White flower yields: 21 Green | ||
*Cross between Green-2 and White flower yields: 15 Blue and 10 Yellow | *Cross between Green-2 and White flower yields: 15 Blue and 10 Yellow | ||
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*Cross between Green-1 and Red flowers yields: 11 Black and 8 Green | *Cross between Green-1 and Red flowers yields: 11 Black and 8 Green | ||
*Cross between Green-2 and Red flowers yields: 10 Blue, 9 Purple, 6 Yellow, 2 Orange | *Cross between Green-2 and Red flowers yields: 10 Blue, 9 Purple, 6 Yellow, 2 Orange | ||
'''F1 and F2 Crosses to Obtain True-breeding Colors''' | |||
'''F1 and F2 Crosses to Obtain True-breeding | |||
*Self-cross of Blue-White flower yields: 18 Blue and 10 White | *Self-cross of Blue-White flower yields: 18 Blue and 10 White | ||
*Self-cross of Blue flower progeny of BW X BW yields: 26 Blue | *Self-cross of Blue flower progeny of BW X BW yields: 26 Blue | ||
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** This F3 progeny was added to the Greenhouse as True-breeding Red | ** This F3 progeny was added to the Greenhouse as True-breeding Red | ||
'''True-breeding Crosses to Observe Dominance''' | '''True-breeding Crosses to Observe Dominance''' | ||
*Cross of Green-1 and True-Yellow yields: 26 Green | *Cross of Green-1 and True-Yellow flowers yields: 26 Green | ||
*Cross of Green-1 and True-Blue yields: 23 Green | *Cross of Green-1 and True-Blue flowers yields: 23 Green | ||
*Cross of Green-1 and True-Red yields: 19 Black | *Cross of Green-1 and True-Red flowers yields: 19 Black | ||
*Cross of True-Red and True-Yellow yields: 23 Orange | *Cross of True-Red and True-Yellow flowers yields: 23 Orange | ||
*Cross of True-Red and True-Blue yields: 28 Purple | *Cross of True-Red and True-Blue flowers yields: 28 Purple | ||
*Cross of any True-Color and White yields: 100% True-Color | *Cross of any True-Color and White flowers yields: 100% True-Color | ||
'''Determination of Alleles for Black, Orange, and Purple Flowers''' | |||
*Cross of Black and White flowers yields: 13 Green and 13 Red | |||
*Cross of Orange and White flowers yields: 12 Yellow and 10 Red | |||
*Cross of Purple and White flowers yields: 12 Red and 13 Blue | |||
==Conclusion== | ==Conclusion== | ||
==Links== | ==Links== | ||
{{Chris H. Rhodes}} | {{Chris H. Rhodes}} |
Revision as of 15:39, 7 September 2011
Methods
- To determine homo- or heterozygous alleles of the parental generation or the original four strands I began by self-crossing each flower. Homozygous crosses would yield only the original color where heterozygous crosses would yield 2 or more colors.
- To determine a scale of dominance among the parental generation and help uncover the different alleles responsible for each color I inter-crossed all the parental flowers.(See Results: Parental Crosses)
- To isolate True-breeding flowers for more accurate future dominance tests I self-crossed select progeny of the F1 generation of the Parental crosses. I then self-crossed select progeny from the F2 generation until a pure F3 generation was created for each color(Red, Blue, Yellow). These True-breeding strains were stored in the Greenhouse.(See Note: Green and White had already been established as true-breeding
Results
Parental Crosses
- Cross between Red and Red flowers yields: 20 Red and 7 White
- Cross between Green-1 and Green-1 flowers yields: 23 Green
- Cross between Green-2 and Green-2 flowers yields: 12 Green, 6 Yellow, and 5 Blue
- Cross between White and White flowers yields: 17 White
- Cross between Green-1 and White flower yields: 21 Green
- Cross between Green-2 and White flower yields: 15 Blue and 10 Yellow
- Both phenotypes were added to Greenhouse as Blue-White and Yellow-White respectively
- Cross between Red and White flower yields: 12 Red and 12 White
- Cross between Green-1 and Red flowers yields: 11 Black and 8 Green
- Cross between Green-2 and Red flowers yields: 10 Blue, 9 Purple, 6 Yellow, 2 Orange
F1 and F2 Crosses to Obtain True-breeding Colors
- Self-cross of Blue-White flower yields: 18 Blue and 10 White
- Self-cross of Blue flower progeny of BW X BW yields: 26 Blue
- This F3 progeny was added to greenhouse as True-breeding Blue
- Self-cross of Yellow-White flower yields: 16 Yellow and 6 White
- Self-cross of Yellow flower progeny of YW X YW yields: 25 Yellow
- This F3 progeny was added to the Greenhouse as True-breeding Yellow
- Self-Cross of Red progeny of F1 Cross R X R yields: 27 Red
- This F3 progeny was added to the Greenhouse as True-breeding Red
True-breeding Crosses to Observe Dominance
- Cross of Green-1 and True-Yellow flowers yields: 26 Green
- Cross of Green-1 and True-Blue flowers yields: 23 Green
- Cross of Green-1 and True-Red flowers yields: 19 Black
- Cross of True-Red and True-Yellow flowers yields: 23 Orange
- Cross of True-Red and True-Blue flowers yields: 28 Purple
- Cross of any True-Color and White flowers yields: 100% True-Color
Determination of Alleles for Black, Orange, and Purple Flowers
- Cross of Black and White flowers yields: 13 Green and 13 Red
- Cross of Orange and White flowers yields: 12 Yellow and 10 Red
- Cross of Purple and White flowers yields: 12 Red and 13 Blue
Conclusion
Links
- Chris Rhodes User Page
- Week 2 Journal
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- Home Page
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