AP BIOLOGY

HEREDITY

MULTIPLE ALLELES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Mendel’s law of dominance means
A
genes from parents are dominant in the offspring
B
one allele of a gene is dominant over the other
C
two genes are both showing up in the offspring
D
blending of traits results in a new phenotype
Explanation: 

Detailed explanation-1: -Mendel’s law of dominance states that: “When parents with pure, contrasting traits are crossed together, only one form of trait appears in the next generation. The hybrid offsprings will exhibit only the dominant trait in the phenotype.” Law of dominance is known as the first law of inheritance.

Detailed explanation-2: -Answer: Mendel’s Laws of inheritance can be described as; 1. The Law of Dominance: The offspring always exhibits a dominant trait. From the two alleles received from parents, the only dominant allele is expressed.

Detailed explanation-3: -A dominant allele is a variation of a gene that will produce a certain phenotype, even in the presence of other alleles. A dominant allele typically encodes for a functioning protein. The allele is dominant because one copy of the allele produces enough enzyme to supply a cell with plenty of a given product.

Detailed explanation-4: -In simple words, the law of dominance states that recessive traits are always dominated or masked by dominant trait.

Detailed explanation-5: -Mendel found that paired pea traits were either dominant or recessive. When pure-bred parent plants were cross-bred, dominant traits were always seen in the progeny, whereas recessive traits were hidden until the first-generation (F1) hybrid plants were left to self-pollinate.

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