XX-XY type of sex determination pattern is present in which of the following organisms?
Correct answer: E. Both A and D
- A. Humans
- B. Butterflies
- C. Grasshopper
- D. Drosophila
- E. Both A and D
Explanation
The XY sex-determination system is the sex-determination system found in humans, most other mammals, some insects (Drosophila), and some plants (Ginkgo).
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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