The pedigree above is characteristic of an inherited conditi
The pedigree above is characteristic of an inherited condition known as male precocious puberty, where affected males show signs of puberty by age 4. Propose a genetic explanation of the phenotype.
This form of male precocious puberty is caused by an autosomal dominant, sex-influenced gene.
This form of male precocious puberty is caused by an autosomal recessive, sex-influenced gene.
This form of male precocious puberty is caused by an X-linked gene.
This form of male precocious puberty is caused by an autosomal dominant, sex-limited gene.
This form of male precocious puberty is caused by an autosomal recessive, sex-limited gene.
| a. | This form of male precocious puberty is caused by an autosomal dominant, sex-influenced gene. | |
| b. | This form of male precocious puberty is caused by an autosomal recessive, sex-influenced gene. | |
| c. | This form of male precocious puberty is caused by an X-linked gene. | |
| d. | This form of male precocious puberty is caused by an autosomal dominant, sex-limited gene. | |
| e. | This form of male precocious puberty is caused by an autosomal recessive, sex-limited gene. |
Solution
This form of male precocious puberty is caused by an autosomal dominant, sex-limited gene.
Because only males show this teiat, so the triat is a sex l8mited as it is expressed in particular sex and it is a dominant triat as it is expressed in every generation.
