The First Law of Inheritance Law of dominance states that “in a cross between two homozygous organisms differing in a single pair of contrasting character, the character which is expressed in the F1 generation is called dominant character and the character which […]
Answer The reasons for Mendel’s success are: i. Mendel chose garden pea plant for his experiments which was an annual, naturally self-pollinating plant with several pairs of contrasting characters. ii. Mendel concentrated only on one character at a time. iii. He […]
Answer Punnett square is a graphical representation to calculate the probability of all possible genotypes and phenotypes of offsprings in a genetic cross. It was developed by Reginald C. Punnett.
Answer Pleiotropy: When a single gene controls two (or more) different traits, it is called pleiotropic gene and this phenomenon is called pleiotropy or pleiotropism. The ratio is 2:1 instead of 3:1. According to Mendel’s principle of unit character, one gene […]
Answer When the two homozygous parents differing in two pairs of contrasting traits are crossed, the inheritance of one pair is independent of the other. In other words, when a dihybrid forms gametes, assortment (distribution) of alleles of different […]
Mendel selected garden pea plant (Pisum sativum) for his experiments because of the following characteristics: ii. The flowers are bisexual and naturally self pollinating. iii. They can be artificially cross-pollinated. iv. The offsprings produced after cross pollination are fertile. v. Pea […]
Heredity: The transmission of characters from one generation to the next or from parents to offsprings is called heredity. Variation: The differences between parents and offsprings or among the offsprings of the same parents and among individuals of the same species is […]