Question 1
How do Mendel’s experiments show that traits may be dominant or recessive?
Question 1
How do Mendel’s experiments show that traits may be dominant or recessive?
When Mendel crossed one tall and one dwarf pea plant, all the offsprings in the first filial (F1) generation was tall. When he self-crossed the F1 generation, among them 34th of the progenies were tall whereas 14th were short. Thus he concluded that although the F1 progeny had both tall and short traits, only tall plants were observed in the F1 generation, which means that tallness is a dominant trait. Thus, it was concluded that the gene causing tallness is dominant while the gene causing dwarfness is recessive. The trait expressing itself in the hybrid is the dominant one. This experiment proves Mendel’s first law of inheritance. It states that when a pair of contrasting factors are brought in a hybrid, one factor inhibits the appearance of the other, one which inhibits is the dominant one and which is inhibited is recessive.
When Mendel crossed one tall and one dwarf pea plant, all the offsprings in the first filial (F1) generation was tall. When he self-crossed the F1 generation, among them 34th of the progenies were tall whereas 14th were short. Thus he concluded that although the F1 progeny had both tall and short traits, only tall plants were observed in the F1 generation, which means that tallness is a dominant trait. Thus, it was concluded that the gene causing tallness is dominant while the gene causing dwarfness is recessive. The trait expressing itself in the hybrid is the dominant one. This experiment proves Mendel’s first law of inheritance. It states that when a pair of contrasting factors are brought in a hybrid, one factor inhibits the appearance of the other, one which inhibits is the dominant one and which is inhibited is recessive.
