NEET BIOLOGY

Detailed explanation-1: -In the F1 generation, Mendel found that all the plants were tall plants even though one of the parents was a dwarf. This was the reason why Mendel’s observation was that the recessive character disappeared in the F1 generation of pea plants. The same observation was found in the case of a dihybrid cross.

Detailed explanation-2: -He called these dominant and recessive traits, respectively. Dominant traits are those that are inherited unchanged in a hybridization. Recessive traits become latent, or disappear in the offspring of a hybridization. The recessive trait does, however, reappear in the progeny of the hybrid offspring.

Detailed explanation-3: -No recessive phenotype appears in the F1 generation. This means that both parents cannot have the recessive allele for each trait.

Detailed explanation-4: -Terms in this set (5) Recessive traits disappear because 2 recessive alleles are needed to produce the recessive phenotype. They can skip generations and can reappear if an individual inherits 2 copies of recessive gene.

Detailed explanation-5: -Genetic Drift. Genetic drift is the change in frequency of an existing gene variant in the population due to random chance. Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation.