BIO 1130 Chapter Notes - Chapter 17: Devo, Heterochrony, Tums
14 Oct 2015
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Evolutionary biologist studied evolutionary history by comparing embryos of different species. Since the late 1980 scientist are able to explore the genomes of organisms better due to. Evolutionary developmental biology advances in molecular genetics evolutionary development can lead to changes in body shape and form. The study of development advances the understanding of macroevolutionary trends because changes in genes that regulate development often promote evolution of morphological innovations. Developmental biologist study phenotypes and their variations. how regulatory genes control the development of. Eg. homeotic genes are regulatory genes that code for transcription factors that bind regulatory sites on dna either activating or repressing the expression of other genes. show most animal share a set of several 100 homeotic genes that. Some homeotic genes must 500 million years old because all living animals inherited the. Genetic tool kit genes from a common ancestor genes governs design of body plan by controlling the activity of 1000 of other.
