GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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two different alleles
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two identical alleles
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Different forms of the same gene
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only expressed if there are two copies
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Detailed explanation-1: -(HOH-moh-ZY-gus JEE-noh-tipe) The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.
Detailed explanation-2: -Having two identical alleles for a given gene is called homozygous. This means that a pair of identical dominant alleles or recessive alleles are found in the same genetic locus of a chromosome. Additionally, an individual that expresses a recessive trait is always homozygous for that gene.
Detailed explanation-3: -The chromosomes in a homologous pair each have the same genes in the same order, but there may be variation between them, resulting in different alleles.
Detailed explanation-4: -If the two alleles are the same, the individual is homozygous for that allele. If the alleles are different, the individual is heterozygous.
Detailed explanation-5: -Genotypes are described as homozygous if there are two identical alleles at a particular locus and as heterozygous if the two alleles differ.