Which of the following best describes how vestigial structures provide evidence to support that life changes over time? a. some animals exhibit similar structures, possibly due to a common ancestor. b. some animals exhibit similar stages of embryonic development c. some animals exhibit structures that are no longer used for any purpose. d. some fossils exhibit similar biological proteins

Which element provides strength to the exoskeleton of clams and oysters

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

What are the two main phases of a cell cycle