What is one key difference between dna and rna?
select one:
a. dna never leaves the cell nucleus; rna does
b. dna contains genetic information; rna does not
c. dna is found inside viruses; rna is not
d. dna does not contain information about how to make proteins; rna does

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.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

The first generation of offspring from the cross of two parents is called the a. f1 generation b. f2 generation c. short generation d. p generation