Taxol is an anticancer drug extracted from the pacific yew tree. in animal cells, taxol disrupts microtubule formation by binding to microtubules and accelerating their assembly from the protein precursor tubulin. surprisingly, this stops mitosis. specifically, taxol must affect
a) chromatid assembly.
b) the fibers of the mitotic spindle.
c) anaphase.
d) the s phase of the cell cycle.
e) formation of the centrioles.

6. in domesticated cats, the following are independently assorting: normal ears (t) is dominant to tufted ears (t); curved whiskers (c) is dominant to straight whiskers (c); the presence of six toes (s) is dominant to five toes (s); gene for hair length is an x-linked codominant. the three phenotypes for hair length are long (xhxh), medium (xhxh), and short (xhxh); medium is the heterozygous condition. given two parents: ttccssxhxh x ttccssxhy how many different gametes could be formed in the female cat with respect to these four traits? how many phenotypes are possible in the offspring from this mating?

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.

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates