A normal green male maize is crossed with albino female. The progeny is albino because:
Correct answer: C. Plastids are inherited from the female parent
- A. The trait for albinism is dominant
- B. The albinos have a biochemical to destroy plastids derived from the green male
- C. Plastids are inherited from the female parent
- D. Green plastids of the male must have mutated
Explanation
This question is tough and is included in the QBank for the thorough preparation of Students.The correct answer is that plastids are inherited from the female parent. In this cross, the female is albino, meaning her plastids lack chlorophyll, leading the progeny to be albino as well. The other options are incorrect because they either misunderstand the dominance relationship of the traits or misrepresent the mechanism of plastid inheritance, which is strictly maternal in this context.
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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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