7. What two developments had to occur for life to begin on Earth?

The genetic code is redundant. What is meant by this statement?

Riley wanted to give her mom a flower for Mother's Day. She decided to plant the flower in a pot first. When she went to the shed, she noticed that the label on the bag of potting soil was missing.

You observe a population of three-toed frogs that lives in the cloud forests of Panama. In this population, you observe the following genotype counts at a locus controlling coloration: 411 (AA), 800 (Aa), and 911 (aa).

Are males and females fundamentally the same except for sexual organs or are they essentially different in many important ways? Are gender roles determined by biology or are they socially-constructed?

What is one defining feature of a prokaryotic cell? cytoplasm surrounds organelles organelles are not membrane-bound membrane-bound organelles have a cell wall outside plasma membrane

The plasma membrane is composed of several different macromolecules which macromolecule serves as the fluid interface between the intracellular and extracellular environments

The table above shows five different types of chromosomal abnormalities that can occur during meiosis. They result in either an individual having too many or too few chromosomes in their genome.

During which stage of disease should an infected person be considered contagious

A scientist observed the boundrary between teo tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. Does this result suppor the theory of plate tectonic? Why or why not?

Do you think the channel on Mars was formed by flowing water or flowing lava