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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genotype
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phenotype
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allele
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gene
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Detailed explanation-1: -An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
Detailed explanation-2: -The two alleles that control the phenotype of a trait are called the trait’s genotype.
Detailed explanation-3: -Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits.
Detailed explanation-4: -Every individual has two copies, or alleles, or a single gene. When the alleles are the same, they are known as homozygotes. When they are different, they are called heterozygotes. Homozygotes code for the same trait, for instance, blue eyes.
Detailed explanation-5: -The number of phenotypes possible is determined by the dominance relationships between the three alleles.