What do they usually do?

John Smith lives in a basketball club. He gets up at five thirty every day. After that, he runs. At eight o'clock, he eats breakfast.

Tom White is a writer. He gets up at eight o'clock in the morning. He usually reads books for two hours after breakfast.

Mary Green is a music teacher. She gets up at six o'clock every morning. Then she eats breakfast. She lives at school but she isn't with her parents.

Mona Black is a clerk. She works at a clothes store. She usually gets up at six thirty. After breakfast she goes to the store by bus.

基因型

B和T同时存在

B不存在，T存在

T不存在

性别

雌雄同株

雄株

雌株