Please could someone do this problem for me i am really in a badshape in genetic
ID: 5789 • Letter: P
Question
Please could someone do this problem for me i am really in a badshape in genetics and dont know what to do. I will promise alifesaver point for this one, cause this really would be a lifesaver, hope someone could help me. :)In peas grey G seed coat color is dominant to white g and brown podcolor B is dominant to yello b pod color. You cross true breedingplants, one with grey seed coat and brown pod color with anotherplant with white seed coat and yellow pod color.
Can you tell me what are the.
1. Genotypes of two parents?
2.Expected Genotypic and phenotypic ratio on F1
3. If you test cross F1 what is the cross?
4. What is the expected pheno and genotypic ratio after thecross?
5. Set up the cross of the F1. What are the genotypes of theindividuals you will cross to produce F2?
6.Set up the punnet square for F2.
7. Set up the genotypic branch diagram for F2? Final ratios?
8. Genotypic and phenotypic ratios of F2?
9. Mathematically determine the expected ratios for the F2,phenotypic and genotypic using the formula 2^n and 3^nrespectively.
Explanation / Answer
Grey G seed coat color ------ dominant
White g-----recessive
Brown pod color B ------- dominant
yellow b pod color--------recessive
1. Genotypes of twoparents?
one with grey seed coat and brown pod color with anotherplant with white seed coat and yellow pod color
GGBB X ggbb
2.Expected Genotypic and phenotypic ratio on F1
GGBB X ggbb
Gametes GB gb
GBgb---------F1OFFSPRING-----grey ,brown
3.If you test cross F1 what is the cross?
GBgb---------F1 OFFSPRING-----grey ,brown
White yellow ggbb----------
GBgb x ggbb
Gametes GB,Gb, gb ,gB gb
OFFSPRINGS
,GBgb,ggbb, gBgb
gametes
gb
GB
GB gb grey brown
Gb
Gb gb grey yellow
gB
gB gb white brown
gb
gb gb white yellow
Answer : Ratio 1:1:1:1
==========================
GBgb grey ,brown x GBgb grey ,brown
gametes
GB
Gb
gB
gb
GB
GB GB
grey brown
GB Gb
grey brown
GB gB
grey brown
GBgb
grey brown
Gb
GB Gb
grey brown
Gb Gb
grey yellow
Gb gB
grey brown
gb Gb
grey yellow
gB
GB gB
grey brown
Gb gB
grey brown
gB gB
white brown
gb gB
white brown
gb
GBgb
grey brown
gb Gb
grey yellow
gb gB
white brown
Gbgb
white yellow
Ratio-----phenotypic -------- 9:3:3:1
gametes
gb
GB
GB gb grey brown
Gb
Gb gb grey yellow
gB
gB gb white brown
gb
gb gb white yellow
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