Answers: 1
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.
Answers: 1
Biology, 21.06.2019 17:50
Aeukaryotic cell must be from a plant if the cell a) a nucleus b) a nuclear envelope c) cytoplasm d) a cell wall
Answers: 1
Biology, 21.06.2019 20:00
Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.
Answers: 1
Biology, 21.06.2019 23:00
Which of the following is not a defining characteristic of plants?
Answers: 3
Structures that have reduced in size because they no longer serve an important function are called...
Social Studies, 27.01.2021 01:10
Social Studies, 27.01.2021 01:10
Mathematics, 27.01.2021 01:10
Mathematics, 27.01.2021 01:10
English, 27.01.2021 01:10
Mathematics, 27.01.2021 01:10
English, 27.01.2021 01:10
Mathematics, 27.01.2021 01:10
Mathematics, 27.01.2021 01:10
Mathematics, 27.01.2021 01:10
French, 27.01.2021 01:10