Why did Neanderthals evolve to have a wider, stockier body shape? 1. because they spent their life in trees
2. because they migrated to Europe with a colder climate
3. because they were bipedal
4. because they stayed in Africa with a warm, dry climate

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.

Look at the picture below . what does this picture represent ?

25. what does meiosis create? haploids or diploid? somatic cells or gametes?