Lethal genes are:

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(A) Lethal genes are genes that cause the death of the organism that carries them. In the provided example of snapdragon (Antirrhinum),the gene for go

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Dominant homozygous

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(A) Lethal genes are genes that cause the death of the organism that carries them. In the provided example of snapdragon (Antirrhinum),the gene for golden color is dominant. When two heterozygous golden plants $(Gg)$ are crossed,the offspring are $1 GG$ (pure golden),$2 Gg$ (hybrid golden),and $1 gg$ (pure green). The $GG$ homozygous condition is lethal,causing the death of the seedling. Therefore,lethal genes often manifest their effect in the dominant homozygous state.

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