Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
15th Edition
ISBN: 9781337408493
Author: STARR, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Publisher: Cengage Learning
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Textbook Question
Chapter 10, Problem 4CT
The photos below show flowers from two Arabidopsis plants. The plant on the left is wild-type (unmutated); the other carries a mutation that causes its flowers to have sepals and petals instead of stamens and carpels. The mutation inactivated one of the plant's ABC floral identity genes. Refer to Figure 10.8 and decide which gene (A, B, or C) has been inactivated.
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the photos below show flowers from two Arabidopsisplants. The plant on the left is wild-type (unmutated); theother carries a mutation that causes its flowers to havesepals and petals instead of stamens and carpels. Themutation inactivated one of the plant's ABC floral identity genes. Refer to Figure 10.8 and decide which gene(A, B, or C) has been inactivated
In the early 1990s, Carolyn Napoli and her colleagues were working on petunias, attempting to genetically engineer a variety with dark purple petals by introducing numerous copies of a gene that encodes purple pigment in the flower petals . Their thinking was that extra copies of the gene would cause more purple pigment to be produced and would result in a petunia with an even darker hue of purple. However, much to their surprise, many of the plants carrying extra copies of the purple gene were completely white or had only patches of color. Molecular analysis revealed that the amount of mRNA produced by the purple gene was reduced 50-fold in the engineered plants compared with wild-type plants. Somehow, the introduction of extra copies of the purple gene silenced both the introduced copies and the plant’s own purple genes. Provide a possible explanation for how the introduction of numerous copies of the purple gene silenced all copies of the purple gene.
Which of the following BEST states genome editing in plants?
A. transform large DNA constructs by suppression and activation
B. insert a functional cis-regulatory element in the natural genes transgene vector
C. assemble and synthesize large DNA molecules in a single transgene vector
D. deletion, mutation, or integration of the gene of interest depending on the target trait
Chapter 10 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
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