EVOLUTION CONNECTION Evolution in insects and vertebrateshas involved the repeated duplication of body segments, followedby fusion of some segments and specialization of their structureand function. In vertebrates, what anatomical features reflectsegmentation?
Q: Most insects have wings. Which is the other animal phylum that contains creatures with analogous…
A: Insects is a class of Arthropods. Organisms of this class belongs to the subphylum Hexapoda and…
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Q: One of the innovations in animal body design, segmentation, allowed fora. development of efficient…
A: Answer: Introduction: Segmentation means the animals and plants division into repetitive segments.
Q: In animals, Hox genes activate proteins to determine A. animal cephalic region O B. animal…
A: HOX genes are groups of regulatory genes which encode for the transcription factors and are…
Q: Which of the following is an animal characteristic that also is a synapomorphy supporting animal…
A: Synapomorphy : A characteristic or trait acquired through evolution from a common ancestral form and…
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A: Evolution can be studied by various evidences like homologous and analogous organs.
Q: Birds are unique because th
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A: Vertebrates Vertebrates are the group of animals that have back bone or vertebrae column. Vertebrae…
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A: The genes in the living organisms which determine the positioning of the organs in the bodies are…
Q: How did the origin of jaws, lungs, limbs, and the amnion affect thecourse of vertebrate evolution?
A: A vertebrate is an animal that has a backbone and a skeleton. Human beings are part of this…
Q: Insects have three thoracic (trunk) segments. While researchershave found insect fossils with pairs…
A: Homeotic gene is a gene used in regulation of various anatomical structures in organisms. It…
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A: Phylogeny is the branch of biology that studies phylogenetic analysis. A phylogenetic analysis is…
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A: Animals that have an anterior and posterior end are said to be cephalized. The anterior end of…
Q: What are the most probable characteristics of the most recent com-mon ancestor of insects? What…
A: The members of phylum Arthropoda are collectively referred to as arthropods. Segmented body, the…
Q: What are the regions of bilateral symmetry of the animals below (frontal, sagittal and transverse)?…
A: Frontal plane It divides the body or an organ into anterior (front) and posterior (back) portions.…
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A: Some scientists like Darwin believe that evolution is a occurred through a series of small, gradual…
Q: egmentation O Can be fused into specialized functional regions Is seen in insects, worms, and their…
A: The sequence repetition of similar organs, tissues, cell types on different body segments placed on…
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A: Amphibians are the organisms that live on both land and water. The adult amphibians use both lungs…
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A: A large number of creatures, on the other hand, have a distinct symmetrical form. Animals have four…
Q: Which of the following is the largestmammal?A. Whale B. RhinocerosC. Elephant D. Human
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A: A complete digestive system consists of a digestive tract with two openings. One opening is the…
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Q: List the features common to all animals.
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EVOLUTION CONNECTION Evolution in insects and vertebrates
has involved the repeated duplication of body segments, followed
by fusion of some segments and specialization of their structure
and function. In vertebrates, what anatomical features reflect
segmentation?
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- Insects have three thoracic (trunk) segments. While researchershave found insect fossils with pairs of wings on all threesegments, modern insects have wings or related structureson only the second and third segment. It turns out thatin modern insects, Hox gene products act to inhibit wingformation on the first segment. The treehopper insect (above)is somewhat of an exception. In addition to having wingson its second segment, the treehopper’s first segment has anornate helmet that resembles a set of thorns, which a recentstudy has found to be a modified, fused pair of “wings.” Thethorn-like structure helps to camouflage the treehopper intree branches, thus reducing its risk of predation. Explain howchanges in gene regulation could have led to the evolution ofsuch a structure.A genetic change that caused a certain Hox gene to be expressedalong the tip of a vertebrate limb bud instead of farther backhelped make possible the evolution of the tetrapod limb.This type of change is illustrative of(A) the influence of environment on development.(B) paedomorphosis.(C) a change in a developmental gene or in its regulation thataltered the spatial organization of body parts.(D) heterochronyIn 1798, a stuffed platypus specimen was delivered tothe British Museum. Reports that it laid eggs createdmuch confusion. To modern biologists, a platypus isclearly a mammal. It has fur and the females producemilk. Young animals have typical mammalian teeth thatare replaced by hardened pads of the “bill” as the animalmatures. Why do you think modern biologists can moreeasily accept that a mammal can have some reptileliketraits than scientists who were considering this animal inthe late 1700s?
- The evolution of different body plans in animals has led to a wide diversity of species. For example, in Cnidaria (which includes jellyfish and corals) we see a radically different body plan compared to insects or birds. What significant evolutionary development is exhibited by insects and birds that is not present in Cnidaria? The development of bilateral symmetry and cephalization. The development of radial symmetry. The development of a calcified exoskeleton. The development of tentacles for capturing prey.What conclusion can be drawn from embryological development? Insect and bird wings are similar in function but not in structure. Paleontologists have used fossils to trace the evolution of the modern camel. Many organisms have structures with no apparent function found during embryo development. The presence of gill slits and tails in early vertebrate embryos shows that they may share a common ancestor.Can someone pleae help with 3 question for my biology homework thank you 1)List two traits that animals share with other organisms, and three traits that are unique to animals. 2)Explain the difference between protostome development and deuterostome development. Use full sentences. 3)As discussed in class, animals are classified into different phyla based on the presence of tissues. Define the two options for animals with true tissues, and give a specific animal phylum as an example of each option.
- A synapomorphy and symplesiomorphy for the vertebrates (respectively) would be; True tissues, Deuterostome development True tissues, Dorsal hollow nerve chord Eukaryotic, Dueterostome development Vertebral column, True tissuesWhat are the most probable characteristics of the most recent com-mon ancestor of insects? What major lineages descended from it?EVOLUTION CONNECTION Living members of a vertebratelineage can be very different from early members of the lineage,and evolutionary reversals (character losses) are common. Giveexamples that illustrate these observations, and explain theirevolutionary causes.
- What type of evolution do vertebrates have? (Parallel, Convergent, or Divergent)Put the following milestones in animal evolution in orderfrom oldest to most recent: (a) origin of mammals,(b) earliest evidence of terrestrial arthropods, (c) Ediacaranfauna, (d) extinction of large, nonflying dinosaurs.At which stage ( one two or threee ) is it most difficult to tell the embryos apart? explain Describe atleast one similarity in the structure of these embryos how do these similarities support the theory of evolution?