Orphan families are families of genes that:
A: Lack homologs in other species.
B: Have no known function.
C: Have no phenotypic change after gene inactivation.
D: Have not yet been studied.
A: Lack homologs in other species.
B: Have no known function.
C: Have no phenotypic change after gene inactivation.
D: Have not yet been studied.
举一反三
- _______ of the families have children.
- ______ have an average of three children. A: Pattern Ⅰ families B: Pattern Ⅱ families C: Pattern Ⅲ families D: None of all
- The war parted many men _______their families. Until now these families have been unable to get reunited.
- “____ each other for a long time?” “Yes, since we were at school.” A: Have you known B: Do you known C: Have you been knowing
- By the end of last term we ___ English for two years. A: have studied B: have been studied C: would studied D: had studied