HEREDITY
THE PEDIGREE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TT
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Tt
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rr
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YY
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Detailed explanation-1: -The notation tt means the homozygous condition, wherein the homologous pair contains same alleles of a gene. Alleles are different forms of one gene.
Detailed explanation-2: -If an organism has two different alleles ( Tt ) for a certain gene, it is known as heterozygous (hetero-means different). Genotype. Definition. Example.
Detailed explanation-3: -A heterozygous genotype is a genotype that has multiple different alleles present in that gene. For example, a genotype that is “Tt” would be heterozygous, where the capital “T” could represent the trait of “tall” and the lowercase “t” could represent the trait of short.
Detailed explanation-4: -So, the correct answer is D “Tt".
Detailed explanation-5: -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).