Phenotypically,a female (XX)mouse embryo that was transformed with a small piece of a Y chromosome bearing the SRY gene would develop as
A)a male.
B)a female.
C)an intersex individual.
D)a male initially,then revert to female after birth.
E)a female initially,then revert to male after birth.

Question

Quizplus · Accepted Answer

The SRY gene is responsible for initiating testis development in male embryos. In normal XY embryos, the SRY gene is present on the Y chromosome and leads to the development of male gonads (testes) and the production of male hormones. If a small piece of the Y chromosome bearing the SRY gene is introduced into an XX mouse embryo, it will develop as a male, as the presence of the SRY gene will initiate testis development and male hormone production. Therefore, the correct answer is A) a male.

Phenotypically,a Female (XX)mouse Embryo That Was Transformed with a Small