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Ayushree
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Asked: 2025-09-26T11:31:49+00:00 In:

A tall pea plant with round seeds (TTRR) is crossed with a short pea plant with wrinkled seeds (ttrr). The F₁ generation will be:

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Poll Results

0%[A] 25% tall with round seeds
0%[B] 50% tall with wrinkled seeds
0%[C] 75% tall with wrinkled seeds
100%[D] 100% tall with round seeds ( 1 voter )
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The correct answer is [D] 100% tall with round seeds.
Here, tallness (T) and round seeds (R) are dominant traits. Crossing TTRR with ttrr gives all F₁ offspring as TtRr, which are tall and round since dominant characters express themselves.

class 10 science sample paper 2026,

CBSE Sample Paper Class 10 Science 2025-26,

class 10 science half yearly paperclass 10 science half yearly paper on tiwari academytall pea plant with round seeds (ttrr) is crossed with a short pea plant
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    1 Answer

    1. ANSWER: [D]

      Explanation: The correct answer is [D] 100% tall with round seeds.

      Genotype of parents → TTRR × ttrr. F₁ offsprings get one dominant allele from tall-round parent and one recessive from short-wrinkled.
      So all F₁ = TtRr (tall and round), showing dominant traits.

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