GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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alternative versions of a gene
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the breeding of organisms that differ in one or more traits
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the case in which the heterozygote displays characteristics of both alleles
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describes an allele whose phenotypic effect is masked by a dominant allele for that trait
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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: -In contrast, the alternative allele refers to any base, other than the reference, that is found at that locus. The alternative allele is not necessarily the minor allele and it may, or may not, be linked to a phenotype. There can be more than one alternative allele per variant.
Detailed explanation-3: -An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome.
Detailed explanation-4: -Alleles are different versions of a gene, which vary according to the nucleotide base present at a particular genome location. An individual’s combination of alleles is known as their genotype.
Detailed explanation-5: -Answer and Explanation: The given statement is true. The alleles represent the gene’s alternative forms with minor variations in their genetic material or DNA sequence.