Key Genetic Terminology for Inheritance — NEET Biology
📚 Practice ConceptDifferentiate between the following – (a) Dominance and Recessive (b) Homozygous and Heterozygous (c) Monohybrid and Dihybrid.
Which of the following statements are NOT correct regarding the Law of Dominance and its implications? S1: The Law of Dominance explains the expression of only one parental character in F1 and the 3:1 ratio in F2. S2: In a cross between true-breeding tall and dwarf pea plants, all F1 progeny are tall due to the dominance of the tall allele. S3: Homozygous dominant (TT) and heterozygous (Tt) genotypes are always phenotypically distinguishable, negating the need for a test cross. S4: The recessive trait typically results from a modified allele producing a more efficient enzyme or an alternative product. S5: A test cross is used to identify the genotype of a dominant parent, always yielding a 3:1 phenotypic ratio if the parent is heterozygous.
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