When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both its parents. This phenomenon is called:
Correct answer: A. Heterosis
- A. Heterosis
- B. Transformation
- C. Splicing
- D. Metamorphosis
Explanation
The increased vigor displayed by the offspring from a cross between genetically different parents is called heterosis. Hybrids from crosses between different crop varieties (F1 hybrids) are often stronger and produce better yields than the original varieties.
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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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