What is a “proximate cause”?

A. The genetic programming that controls behavior

B. Pattern of learning that creates behavior

C. The stimulus that triggers a behavior

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

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.

When are the centromeres broken in meiosis?