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Standard XII
Biology
Mendel's Experiments and Laws of Inheritance
Question

When a pea plant with yellow round seeds was crossed with a plant with green wrinkled seeds, yellow round, yellow wrinkled, green round and green wrinkled seed-producing varieties were obtained in almost equal numbers. The genotypes of the parents in this cross are

A
YyRR$$\times$$ yyrr
B
YYRR $$\times$$ yyrr
C
YyRr$$\times$$ yyrr
D
YYRr$$\times$$ yyrr
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Solution
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Correct option is A. YYRR $$\times$$ yyrr

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Similar Questions
Q1
When a pea plant with yellow round seeds was crossed with a plant with green wrinkled seeds, yellow round, yellow wrinkled, green round and green wrinkled seed-producing varieties were obtained in almost equal numbers. The genotypes of the parents in this cross are
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Q2
A pea plant with yellow and round seeds is crossed with another pea plant with green and wrinkled seeds that produced 49 yellow round and 49 yellow wrinkled seeded pea plants. The genotype of parent plant with yellow round seeds must be:
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Q3
A cross between parent pea plants having green round seeds with those having yellow wrinkled seeds would produce F1 plants with ____.
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Q4
Mendel first crossed pure-bred pea plants having round -yellow seeds with pure-bred pea plants having wrinkled -green seeds and found that only round- yellow seeds were produced in the F1 generation. When F1 generation pea plants having round-yellow seeds were cross-bred by self-pollination, then peas having round-yellow seeds, round green seeds, wrinkled-yellow seeds and wrinkled -green seeds were produced. Mendel collected a total of 2160 seeds.

(a) What will be the number of
(i) round green seeds
(ii) wrinkled green seeds
(iii) round yellow seeds, and
(iv) wrinkled-yellow seeds?
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Q5

Question 5
If a round, green-seeded pea plant (RRyy) is crossed with wrinkled, yellow-seeded pea plant (rrYY), the seeds produced in F1 generation are

(a) round and yellow
(b) round and green
(c) wrinkled and green
(d) wrinkled and yellow
( Round-R, Green-y, Wrinkled-r, Yellow-Y)


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