Principle of Inheritance and VariationEasyBloom L3
Question
Mendel's rules do not correctly predict patterns of inheritance for tightly linked genes or the inheritance of alleles that show incomplete dominance or epistasis. Does this mean that his hypothesis are incorrect?
Options
A.Yes, because they are relevant to only a small number of organisms and traits.
B.Yes, because not all data support his hypothesis.
C.No, because he was not aware of meiosis or the chromosome theory of inheritance.
D.No, it just means that his hypothesis are limited to certain conditions.
Solution
Sol.(d) [Key Concept: Mendel's Laws — Limitations] Mendel's hypotheses are NOT incorrect — they are simply limited to certain conditions. All scientific laws/hypotheses have specific conditions of applicability. Mendel's laws hold for genes on different (non-homologous) chromosomes that show complete dominance and where epistasis is absent. Exceptions (linkage, incomplete dominance, epistasis) are additional phenomena that extend beyond, but do not invalidate, Mendel's foundational principles.
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