Development of an animal is controlled by the genes that are expressed during development. What roles have been proposed for Hox genes in the evolution and morphology of animal species? Group of answer choices 1. Variation in the Hox genes may have spawned the
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Development of an animal is controlled by the genes that are expressed during development. What roles have been proposed for Hox genes in the evolution and morphology of animal species?
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- Figure 27.5 If a Hox 13 gene in a mouse was replaced with a Hox 1 gene, how might this alter animal development?1 page: Describe the radiation in vertebrate forms from phylotypic stage by focusing on three groups of vertebrates and then tracing the development of several homologous features in each group. Connect specific embryological structures in the phylotypic stage to divergent morphological structures in the adults of each of these groups.Which of the following are documented effects of Hox genes? Choose all that apply. Group of answer choices 1-Hox genes determine where body parts like legs will form 2-Hox genes determine lactase persistence in humans 3-Hox genes determine the general orientation of the body, where is the head end and where is the back end. 4-Hox genes determine how many vertebrae a vertebrate animal will have
- Mammals belong to a group of amniotes known as synapsids. Three major lineages of mammals had emerged by the early Cretaceous period. In a tabulated form, compare these three lineages to illustrate their diversity in terms of: a. Embryonic developmen, b. How the young are fed and c. Period of gestationHow can evolutionary relationships among organisms be determined by comparing embryonic development? A. Embryos of fish and mammals share no similarities B. Embryos retrace their ancestral stages during embryonic development C. Embryos of more closely related organisms show greater similarities in development D. Embryos that develop inside eggs lack similarities to placental mammalsReview the stages of early development in animals. How are these stages similar in the animals you have studied? How do they differ? Complete Table 25.3. Thank you
- Using the following list, describe the proper sequence for the events of animal development: 1. Tissues, organs, and other body structures in each segment are formed. 2. Axes of the entire animal are determined. 3. Cells become differentiated. 4. The entire animal is divided into segments. a. 2, 3, 4, 1 b. 1, 2, 4, 3 c. 2, 4, 3, 1 d. 3, 2, 4, 1 e. 2, 4, 1, 3Australopithecus. This was the first stage in human evolution to demonstrate bipedalism, the ability to walk on two legs. These animals were no longer knuckle-walkers like their apelike ancestors. Why do you think this change occurred? How did this change in physical appearance affect the behavior and survival of Australopithecus?Describe the radiation in vertebrate forms from phylotypic stage by focusing on three groups of vertebrates and then tracing the development of several homologous features in each group. Connect specific embryological structures in the phylotypic stage to divergent morphological structures in the adults of each of these groups. (Answer all questions, if possible)
- 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) heterochronyScientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution? A. The similarities suggest that chickens and humans are the direct descendants of modern day fish with tails and gill slits. B. The similarities suggest that vertebrates passthrough each of the adult stages of their evoluntionary history as they develop. C. The similarities suggest that vertebrates can undergo genetic changes during development that lead to the evolution of new species D. The similarities suggest that chickens and humans descend from ancestors with genes that code for the development of tails and gill slitsList down 3 differences and 3 similarities between the embryonic development of human & chicks