MCD BIO 138 Lecture Notes - Lecture 8: Homeosis, Antennapedia, Anterior Segment Of Eyeball
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1.Which of the following CORRECTLY orders the sequence in which genes controlling the development of the anterior-posterior axis of Drosophila larvae are expressed?
maternal-effect genes, gap genes, pair-rule genes, segment-polarity genes | ||
maternal-effect genes, gap genes, segment-polarity genes, pair-rule genes | ||
pair-rule genes, maternal-effect genes, segment-polarity genes, gap genes | ||
maternal-effect genes, segment-polarity genes, pair-rule genes, gap genes | ||
gap genes, pair-rule genes, segment-polarity genes, maternal-effect genes |
2.
Maternal-effect genes:
are expressed by the mother. | ||||||||||||||||||||||||||||||||
affect maternal phenotype. | ||||||||||||||||||||||||||||||||
affect offspring phenotype. | ||||||||||||||||||||||||||||||||
are expressed by the mother and affect maternal phenotype. | ||||||||||||||||||||||||||||||||
are expressed by the mother and affect offspring phenotype. 3. Cellular differentiation progressively restricts cell fate because the unexpressed genes in the cell:
|