Asked by Serena Wilson on May 07, 2024
Verified
The ability to roll the edges of the tongue upward in a U-shape is inherited as a dominant allele at a single gene locus. Which of the following genotypes would produce an individual that can roll their tongue?
A) TT only
B) Tt only
C) tt only
D) TT or Tt
E) Tt or tt
Dominant Allele
Allele that exerts its phenotypic effect in the heterozygote; it masks the expression of the recessive allele.
Gene Locus
The specific fixed position on a chromosome where a particular gene or genetic marker is located, essential in genetics for identifying gene variations.
Tongue Rolling
The ability to roll the tongue into a U-shape, considered to be a genetic trait.
- Separate the concepts of phenotype and genotype into distinct categories.
Verified Answer
MA
Mohammed Al BaderMay 10, 2024
Final Answer :
D
Explanation :
The ability to roll the tongue is inherited as a dominant trait, therefore, an individual must have at least one dominant T allele to be able to roll their tongue. As TT and Tt genotypes both include at least one dominant T allele, individuals with either of these genotypes will be able to roll their tongue.
Learning Objectives
- Separate the concepts of phenotype and genotype into distinct categories.