AP BIOLOGY

HEREDITY

MUTATIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the definition of an allele?
A
A types of gene
B
An alternate form of a gene
C
Maternal and paternal chromosome
D
A specific section of DNA
Explanation: 

Detailed explanation-1: -An allele is one of two or more versions of DNA sequence (a single base or a segment of bases) at a given genomic location. An individual inherits two alleles, one from each parent, for any given genomic location where such variation exists. If the two alleles are the same, the individual is homozygous for that allele.

Detailed explanation-2: -(uh-LEEL) One of two or more DNA sequences occurring at a particular gene locus. Typically one allele (“normal” DNA sequence) is common, and other alleles (mutations) are rare.

Detailed explanation-3: -Final answer: The term for alternative forms of a gene is known as allele or alleles.

Detailed explanation-4: -Complete answer: Alleles are the alternative forms of a gene for producing different effects. The homologous individual contains two alleles which are the same for that gene. Heterozygous individuals contain the elements which are different for that gene.

Detailed explanation-5: -An allele is an alternative form of a gene. It is located in a specific location on a certain chromosome. The alleles are passed down from parents to the offspring through sexual reproduction.

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