How many phenotypes are possible from the cross Aabb x AaBb?
Six
Four
Eight
Two

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow

Identify the fungus type pictured below. the image shows a mushroom used often in cooking, will gills underneath its cap.