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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Alleles are codes for recessive traits
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Alleles are alternative form of genes
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Recessive allele produces phenotype for heterozygous
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When both alleles are same, the individual is heterozygous
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Detailed explanation-1: -In genetics, an allele is an alternative form of a gene. Usually, a single pair of alleles controls a character or trait. In a pair of alleles, one may be dominant over the other ( e.g. any one character studied by Mendel). Alleles always occupy the same position/locus on the homologous chromosomes.
Detailed explanation-2: -The correct answer is “True". Alleles are different forms of a gene. There may be several alleles that code for different versions of a trait.
Detailed explanation-3: -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. Alleles are usually used to describe the variation among genes.
Detailed explanation-4: -Final answer: The term for alternative forms of a gene is known as allele or alleles.
Detailed explanation-5: -"Allele” is the word that we use to describe the alternative form or versions of a gene. People inherit one allele for each autosomal gene from each parent, and we tend to lump the alleles into categories. Typically, we call them either normal or wild-type alleles, or abnormal, or mutant alleles.