Bio 311D Week 3 discussion A (1)

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Austin Community College District *

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Biology

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Feb 20, 2024

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BIO311D: Week 3 Discussion A Submit assignment via Canvas by 10pm Wed. 8pts available towards your final grade. You may complete the assignment by yourself if you choose not to attend discussion times. **Attendance not required –but advised** For the first 10-15 minutes of discussion, your TA will do a recap of some of the key points covered. After, split into your breakout groups. Work through the assignment below. After a time, your TA will bring you back to talk over your answers before you submit. Q1. Most arthropods, like the centipede below, have legs growing from their abdominal segments (controlled by Ubx hox gene). Give a possible explanation that could explain why Insects do not have legs on their abdomen. [1pt] One possible explanation that could explain why insects do not have legs on their abdomen could be that the mutation in the Ubx hox gene prevents the formation of legs on the abdomen, and therefore is repressed.
Answer Q2-4 based on the phylogenetic tree below. Q2. Which morphological trait evolved more than once in animals, according to the phylogeny based on DNA sequence data found in the figure? [0.5pts] A) coelom B) bilateral symmetry C) segmentation D) protostome development Q3. Which of the following statements is supported by the phylogeny in the figure? [0.5pts] A) Deuterostoma are more evolutionarily advanced than Porifera. B) Traits, once they evolve, are retained in later-evolving taxonomic groups. C) Animals show no evidence of convergent evolution in their traits. D) Animals with extremely different adult forms can be relatively closely related. Q4. Which of the following pairs of animals show that animals with
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