A scientist identifies a sequence at random from the human genome. Which description of the sequence is the most likely?
A. The sequence is located on a sex chromosome.
B. The sequence is part of a gene for cell growth and development.
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C. The sequence is part of a gene for immunity and defense
D. The function of the sequence is unknown or unidentified.

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.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays