You are researching sexual reproduction in primates. while you are examining some cells under the microscope you see what appear to be four sister chromatids bound together. you also noticed a remnant of the nuclear envelope. what stage of meiosis are you looking at?

Which situation would most likely result in evolution? question 2 options: an alligator has no alleles for scales. a large population loses a few individuals. a single individual joins a large population. a predator prefers one phenotype to another.

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

How does the carbon cycle involve an exchange of carbon