CBSE Class 12-science Answered
In sweet pea yellow seed (YY) is dominant over wrinkled (rr) .what will be the phenotypic ratio would be obtained in the progeny of following crosses.
1. YyRR × YYRr
2. Yyrr × yyrr
3. yyRr ×YyRr
4. YyRr × yyRR
Asked by gschinubn56 | 03 Sep, 2022, 10:12: AM
Expert Answer
1. YyRR × YYRr
Gametes: YR, YR, yR, yR
|
|
YR |
YR |
yR |
yR |
|
YR |
YYRR |
YYRR |
YyRR |
YyRR |
|
YR |
YYRR |
YYRR |
YyRR |
YyRR |
|
yR |
YyRR |
YyRR |
yyRR |
yyRR |
|
yR |
YyRR |
YyRR |
yyRR |
yyRR |
Phenotypic Ratio = Yellow Round : Green Round = 12:4 = 3:1
Similarly, other crosses can be solved using a Punnett square and phenotypic ratio can be calculated.
Answered by Sheetal Kolte | 09 Sep, 2022, 12:27: PM
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