Question

9 multiple choice 2 points some scientists use molecular evidence to study evolution. one type of molecular evidence is the amino acid sequence of particular proteins in various species. which of the following best describes what the study of these sequences reveals about the species? the more similar the sequences are, the faster the species will coevolve. the more similar the sequences are, the more closely related the species are. the longer the sequences are, the earlier the species evolved in geologic history. the longer the sequences are, the more adapted the species are to their environments. 10 multiple choice 2 points fossils typically provide evidence for evolution because they are millions of years old. they exist in all types of rocks. they supply good samples of rna. they show patterns of biological change.

Explanation:

• For question 9: Molecular evidence, such as amino - acid sequences of proteins, is used in evolutionary studies. According to evolutionary theory, more similar amino - acid sequences between species indicate a closer evolutionary relationship. Co - evolution (the first option) is about the reciprocal evolution of species in a relationship (e.g., predator - prey), and it is not directly related to amino - acid sequence similarity. The length of the sequence (third and fourth options) is not a determinant of evolutionary relatedness in terms of when a species evolved or its environmental adaptation.
• For question 10: Fossils are important evidence for evolution because they show patterns of biological change over time. Just being old (first option) does not necessarily provide evidence for evolution. Fossils do not exist in all types of rocks (e.g., they are not typically found in igneous rocks formed from molten magma), so the second option is incorrect. Fossils do not supply good samples of RNA (third option), as RNA is a relatively unstable molecule and is not well - preserved in fossils.

Answer:

1. The more similar the sequences are, the more closely related the species are.
2. they show patterns of biological change.