In a particular trait in Drosophila a cross between a mutant male and wild type female...

In a particular trait in Drosophila a cross between a mutant male and wild type female results in all wild type offspring, while a cross between a wild type male and a mutant female produces all mutant offspring. Describe the genetics of the trait.

Expert Solution

In this case, female parent determines the phenotype of the offspring (no matter what is the genotype of that offspring). It is an example of cytoplasmic inheritance which is found to exhibit maternal influence.

Very little cytoplasmic content is contained in the sperm. Most of the cytoplasm is contributed to the zygote by the ovum or egg. Hence, if there are hereditary units present in the cytoplasm, these will be transmitted to the offspring through the egg of female parent. The offspring, therefore, will exhibit maternal influence.

Further explanation is given below:

gladiator answered 2 years ago

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