what is the law of dominance of traits? explain with an example.
Answers
Law of Dominance states that dominant alleles always mask the recessive alleles. In heterozygous condition always dominant allele is expressed in F1 generation. ...
For example, a cross between any pair of contrasting characters, always dominant character is expressed.
Answer:
What Is Mendel’s Law of Dominance?
What is Mendel’s Law of Dominance?
According to Mendel’s Law of Dominance, “When an organism is heterogeneous for a trait, it expresses only the dominant allele”. In other words, the dominant trait always masks the recessive trait.
What this means is that one allele is dominant over the other allele when they are different alleles. Consider it like this; a person with a louder voice is more likely to be heard than a second person with a quieter voice. In the same way, the dominant allele contributes exclusively to the phenotype (the outward expression of the trait) of the offspring. Dominance occurs when one of the two alleles is non-functional, which means that it does not produce a functional protein. The recessive trait will be expressed only when the offspring inherits the recessive trait from both parents. An organism will show a distinctive phenotype when it is homozygous for a non-functional allele, due to the absence of protein products.
Let’s take an apple as an example, a variety that exists in two colors, namely red and green. Also, let’s assume that RR represents the allele for a red apple and rr represents allele for a green apple.
mandel's low of dominance apple
A dominant gene is one that is expressed in the offspring. When true-breeding red and green apples are crossed, all apples are red, which means that the red (RR) trait is dominant over the green (gg) trait. The F1 generation offspring express only the dominant gene. Punnett squares help in better understanding all of this.
Explanation:
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