What is the function of the protein, H-Y antigen?
a) molding undifferentiated gonadal tissue into a testis
b) molding undifferentiated gonadal tissue into an ovary
c) altering gene structures so gonadal tissue can become either male or female
d) altering sex chromosomes so gonadal tissue can become either male or female
a
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According to the introductory discussion of bilingualism,
a. more than half of the people in the world are at least partially bilingual. b. technically, a multilingual is someone who speaks two different languages that have different historical origins. c. a speaker's first language is the language that she or he currently speaks most fluently. d. the majority of the world's bilinguals learned their second language during high school.
Many conditions affecting human health are purely genetic
Indicate whether this statement is true or false.