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1.
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One pair of contrasting character is considered in the parents.
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Two pairs of contrasting characters are considered in the parents.
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2.
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The phenotypic ratio in F2 individuals is 3:1.
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The phenotypic ratio in F2 individuals is 9:3:3:1.
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3.
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The genotypic ratio in F2 individuals is 1:2:1.
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The genotypic ratio in F2 individuals is 1:2:2:4:1:2:1:2:1
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.4.
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It explains the law of dominance and the law of segregation.
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It explains the law of dominance, the law of segregation and the law of independent assortment.
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5.
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Example: A cross between homozygous tall (TT) and homozygous dwarf (tt) sweet pea.
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Example: A cross between pure sweet pea producing yellow round seeds (YYRR) and another pure sweet pea producing green wrinkled seeds (yyrr).
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