Question

explain the dominent or mendal with the help of monohybrid cross

Answer 1

Every member of the F1 generation is heterozygous and the phenotype of the F1 generation expresses thedominant trait. ... This cross was originally used by biologist GregorMendel, who crossed two pea plants to obtain a hybrid variety and discovered the dominancerelationships between alleles of several genes.

Answer 2

Answer
Mendel’s law of dominance states that a dominant allele expresses itself in a monohybrid cross and suppresses the expression of recessive allele. However, this recessive allele for a character is not lost and remains hidden or masked in the progenies of F1generation and reappears in the next generation.
For example, when pea plants with round seeds (RR) are crossed with plants with wrinkled seeds (rr), all seeds in F1 generation were found to be round (Rr). When these round seeds were self fertilized, both the round and wrinkled seeds appeared in F2 generation in 3: 1 ratio. Hence, in F1 generation, the dominant character (round seeds) appeared and the recessive character (wrinkled seeds) got suppressed, which reappeared in F2.

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