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Biology, 21.06.2019 17:00
The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.
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Biology, 21.06.2019 20:00
The phylogeny chart shows the evolution of camels. camelus is the modern-day camel. based on this chart, which three statements are true? â• modern camels are more related to stenomylus than to eschatius. â• stenomylous and modern camels do not share a common ancestor. â• modern camels are more related to camelops than to aepycamelus. â• pliauchenia and oxydactylus may share similar features. â• procamelus and stenomylous may share similar features.
Answers: 2
Biology, 21.06.2019 23:50
Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.
Answers: 1
Under which of the following circumstances would the allele frequencies of two populations be very d...
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