The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes?
Correct answer: D. Four
- A. Seven
- B. Six
- C. Five
- D. Four
Explanation
The genes controlling the seven pea characters studied by Mendel are now known to be located on four different chromosomes (option d). This illustrates the concept of independent assortment, where genes on separate chromosomes assort independently during gamete formation, leading to a variety of trait combinations in the offspring.
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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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