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A cross between pure tall Pea plant with green pods and dwarf Pea plant with yellow pods will produce short F2 plants out of 16
[1994]
- a)9
- b)3
- c)4
- d)1
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A cross between pure tall Pea plant with green pods and dwarf Pea plan...
The two factors of each trait arrange or assort at random and are independent of each other in their distribution into the gametes and in the progeny.
Tall (T) - 12; Dwarf (D) - 4
Most Upvoted Answer
A cross between pure tall Pea plant with green pods and dwarf Pea plan...
4 short plant will be there, because if both the parent plant are pure than in first generation we gonna get "TtRr" offspring as a result of crossing but when we cross TtRr in F2 we gonna get the ratio of 9:3:3:1 and here last 3:1 offspring are dwarf but green and yellow poded respectively but overall we gonna get 4 dwarf plant.
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A cross between pure tall Pea plant with green pods and dwarf Pea plan...
Introduction to Pea Plant Genetics
In pea plant genetics, traits such as height and pod color follow Mendelian inheritance patterns. Understanding how these traits are inherited helps explain the results of specific crosses.
Parental Generation (P1)
- Tall Pea Plant (TT) with Green Pods (GG)
- Dwarf Pea Plant (tt) with Yellow Pods (gg)
F1 Generation
When you cross a pure tall plant with a dwarf plant, the offspring (F1 generation) will all be heterozygous for height (Tt) and for pod color (Gg). Consequently, all F1 plants will be tall with green pods.
F2 Generation Analysis
When the F1 plants are crossed (TtGg x TtGg), we can use a Punnett square to predict the F2 generation phenotypes.
- Height Trait:
- Tall (T) is dominant over dwarf (t).
- Possible combinations: TT, Tt, Tt, tt
- Result: 3 Tall (TT, Tt) : 1 Dwarf (tt)
- Pod Color Trait:
- Green (G) is dominant over yellow (g).
- Possible combinations: GG, Gg, Gg, gg
- Result: 3 Green (GG, Gg) : 1 Yellow (gg)
Combining Traits
To find the frequency of short plants in the F2 generation, we combine the results of both traits:
- Tall and Green: 9 (TTGG, TTGg, TtGG, TtGg)
- Tall and Yellow: 3 (TTgg, Ttgg)
- Dwarf and Green: 3 (ttGG, ttGg)
- Dwarf and Yellow: 1 (ttgg)
Conclusion
From the 16 possible combinations in the F2 generation, short (dwarf) plants total to 3 (3 Dwarf with Green Pods + 1 Dwarf with Yellow Pods). Thus, the answer is option "C," which states that 4 out of 16 plants will be short.
In pea plant genetics, traits such as height and pod color follow Mendelian inheritance patterns. Understanding how these traits are inherited helps explain the results of specific crosses.
Parental Generation (P1)
- Tall Pea Plant (TT) with Green Pods (GG)
- Dwarf Pea Plant (tt) with Yellow Pods (gg)
F1 Generation
When you cross a pure tall plant with a dwarf plant, the offspring (F1 generation) will all be heterozygous for height (Tt) and for pod color (Gg). Consequently, all F1 plants will be tall with green pods.
F2 Generation Analysis
When the F1 plants are crossed (TtGg x TtGg), we can use a Punnett square to predict the F2 generation phenotypes.
- Height Trait:
- Tall (T) is dominant over dwarf (t).
- Possible combinations: TT, Tt, Tt, tt
- Result: 3 Tall (TT, Tt) : 1 Dwarf (tt)
- Pod Color Trait:
- Green (G) is dominant over yellow (g).
- Possible combinations: GG, Gg, Gg, gg
- Result: 3 Green (GG, Gg) : 1 Yellow (gg)
Combining Traits
To find the frequency of short plants in the F2 generation, we combine the results of both traits:
- Tall and Green: 9 (TTGG, TTGg, TtGG, TtGg)
- Tall and Yellow: 3 (TTgg, Ttgg)
- Dwarf and Green: 3 (ttGG, ttGg)
- Dwarf and Yellow: 1 (ttgg)
Conclusion
From the 16 possible combinations in the F2 generation, short (dwarf) plants total to 3 (3 Dwarf with Green Pods + 1 Dwarf with Yellow Pods). Thus, the answer is option "C," which states that 4 out of 16 plants will be short.
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A cross between pure tall Pea plant with green pods and dwarf Pea plant with yellow pods will produce short F2 plants out of 16[1994]a)9b)3c)4d)1Correct answer is option 'C'. Can you explain this answer?
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