In the \( F_{2} \) generation of a dihybrid cross between yellow, round seeded and green, wrinkl...

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In the \( F_{2} \) generation of a dihybrid cross between yellow, round seeded and green, wrinkled seeded pea plants, 17 out of 254 pea seeds were green and wrinkled. Other seeds were: Yellow and round; green and round; yellow and wrinkled. These results indicate which of the following statement?
(a) Crossing over has occurred.
(b) Green and wrinkled are both recessive characters.
(c) The alleles for green and wrinkled are linked.
(d) The allele for green is recessive but not the allele for wrinkled.
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