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Question
Shell coiling in Limnaea (snail) is an example of
Shell coiling in Limnaea (snail) is an example of
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Solution
The correct option is B Maternal inheritance
The female gamete contribute cytoplasm to the developing embryo. Therefore, the traits controlled by genes present in cytoplasm follow maternal inheritance.
A biparental inheritance includes Mendelian inheritance where the offspring inherits a maternal and a paternal allele of a gene.
Dauermodification refers to an acquired character which is transmitted through the cytoplasm to offspring but is not a permanent heredity trait.
Shell coiling in snail is controlled by D (dextral) and d (sinistral) alleles. The genotype of progeny depends on genotype of mother. If mother is "DD", the Dd offspring are dextral but the "Dd" progeny of "dd" mother has sinistral coiling.
Therefore, the correct answer is option A.
The female gamete contribute cytoplasm to the developing embryo. Therefore, the traits controlled by genes present in cytoplasm follow maternal inheritance.
A biparental inheritance includes Mendelian inheritance where the offspring inherits a maternal and a paternal allele of a gene.
Dauermodification refers to an acquired character which is transmitted through the cytoplasm to offspring but is not a permanent heredity trait.
Shell coiling in snail is controlled by D (dextral) and d (sinistral) alleles. The genotype of progeny depends on genotype of mother. If mother is "DD", the Dd offspring are dextral but the "Dd" progeny of "dd" mother has sinistral coiling.
Therefore, the correct answer is option A.
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