Some alleles are dominant and others are recessive. An organism with at least one dominant allele for a particular form of a trait will exhibit that form of the trait. An organism with a recessive allele for a particular form of a trait will exhibit that form only when the dominant allele for the trait is not present. This states the

recessive alleles can only show up when there are no dominants. If a mother has brown eyes and a father has green eyes, the offspring has a bigger chance of having brown eyes. In this case, brown eyes are dominant and green eyes are recessive. If the mother and father have green eyes, the offspring is most likely to have green eyes. In this case, green eyes are recessive.

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priyankatutor priyankatutor · Answer 2 · 2021-12-17T14:06:27+01:00

Appearance of only dominant allele phenotype in the heterozygous offspring shows Law of dominance.

Law of dominance:

It states that in an hetrozygous organism, only dominant allele appears. When two pure parents cross, the all resulting offspring heterogygous and have dominant phenotype.

For example- When parent with pure genotype, Red color (dominant) and white color (recessive) crosses, in F1 generation all plants will produce red flowers and are heterozygous.

Therefore, appearance of only dominant allele phenotype in the heterozygous offspring shows Law of dominance.

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