OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2 dominant alleles
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2 recessive alleles
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at least 1 recessive allele
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1 dominant allele and 1 recessive allele
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Detailed explanation-1: -The notation Tt means the heterozygous condition in genetics. In this condition a homologous pair contains different alleles of a gene. One homologous chromosome possesses the recessive allele and the other chromosome possesses the dominant allele present for a gene.
Detailed explanation-2: -An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive.
Detailed explanation-3: -An organism can be either homozygous dominant (TT) or homozygous recessive (tt). If an organism has two different alleles (Tt) for a certain gene, it is known as heterozygous (hetero means different). Phenotype is a way to describe the traits you can see.
Detailed explanation-4: -Thus for the genotype Tt, there are two alleles: T and t. So, the correct answer is “Option B”. Additional Information: Genotype: They are the genes present in the DNA of an organism.