How is continental crust different from oceanic crust?

a. continental crust is thinner and younger.

b. continental crust is more dense and contains a lot of basalt.

c. oceanic crust is thicker and contains a lot of granite.

d. oceanic crust is thinner and younger.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

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