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gd H) 42% D Sun 2:15 PM student a E Safari File Edit View History Bookmarks Window Help blackboard odu.edu Ch 13 Q 201420 SPRING BIOL292 28190 Take Test: Ch 13 Quiz 201420 SPRING BIOL292 28190 DOCX DOMINION KRYSTLE LEWIS Compe Ver VERSITY Analysis My Professional Learning Content Coupoton Student Resourc Resouroes Help kboard & Courses Question Completion Status Screen Shot QUESTION 15 0.11364 points 15-0...5.09 PM Saved Deep homology of homeotic genes is also seen in plants. For example, the MADS-box genes have been used to work out phylogenetic relationships within flowering species of plants. What was also documented in these studies across many plant lineages? The MADS-box genes play a role in flower development, but they don't have any effect on nonflowering plant species, such as gymnosperms. o The MADS-box genes are also instrumental in nonflowering plant species, where they are involved in developmental pathways in leaf and root systems. DOCX There is almost no similarity among the flowering and nonflowering plants, in the structure of MADS-box genes that are ychology involved in the early developmental pathways. cle Review none of the above QUESTION 16 0.11364 points Saved Define a regulatory enhancer of a gene. The state of chromatin in the surrounding areas is the main enhancer of a gene. Screen Shot Enhancers target proteins for degradation and thus stop the expression of the unwanted genes. 150...5.28 PM o The regulatory enhancer is a section of DNA that lies outside of that gene but is involved in regulating the timing and level of that gene's expression. none of the above Screen Shot 15-0...5.34 PM QUESTION 17 0.11364 points Saved If a gene is affected by many regulatory enhancers, what would be an important evolutionary implication? a The enhancers can increase morpholoaical variation and hence the amount of variation that natural selection has to act on

Explanation / Answer

Question no 15 -2- The MADS- box gene are also instrumental....................................leaf and root system.

Question no 16 - 3- The reguatory enhancer is sequence of DNA..........................gene's expression.

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