Sister chromatids are

Uring a trip to the galapagos islands, which observation led charles darwin to suspect that organisms change over time? island finches were able to breed with mainland species. island finches resembled mainland finches, but were not the same species.

A scientific theory can never be disproven true or false?

This is the genus that includes modern humans and species closely related to them and is estimated to be about 2.3 to 2.4 million years old.

Which statement best describes why a pond ecosystem could be considered an open system?

Why is it important for DNA to replicate during interphase, before mitosis

What is an explanation of why producers are always found at the lowest trophic level?

Whats the diffrence between qualitative and qauntitative data

A child with a suspected airway obstruction is brought to the emergency room. he produces a harsh, strident sound on inspiration (stridor). where is the obstruction likely to be located, based on this information?

Roan cattle show codominance for the color of their hair. there are alleles for red hair and white hair. what would you expect a heteozygous roan bull to look like if the trait showed incomplete dominance instead?

Which natural polymer contains 3,000 or more glucose monomers? starch protein cellulose nucleic acid?