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A female snail hasoffspring that all coil to the right. What are the possible genotypes ofthis female snail?

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter8: How Cells Reproduce

Section: Chapter Questions

Problem 4CT

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A female snail has
offspring that all coil to the right. What are the possible genotypes of
this female snail?

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Assuming that such a fly would be viable, what would be the sexof a fruit fly with the following chromosomal composition?A. One X chromosome and two sets of autosomesB. Two X chromosomes, one Y chromosome, and two sets ofautosomesC. Two X chromosomes and four sets of autosomesD. Four X chromosomes, two Y chromosomes, and four sets ofautosomes
In a cross of Lymnaea, the snail contributing the eggs was dextralbut of unknown genotype. Both the genotype and the phenotypeof the other snail are unknown. All F1 offspring exhibited dextralcoiling. Ten of the F1 snails were allowed to undergo self-fertilization.One-half produced only dextrally coiled offspring, whereasthe other half produced only sinistrally coiled offspring. Whatwere the genotypes of the original parents?
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