Explain how a testcross can be used to determine if a dominant phenotype is heterozygous or homozygous.

The smallest functional unit of a living thing is a molecule tissue Ocell ecosystem

In a favorable environment, bacteria can reproduce about every 20 minutes. There are four bacteria that is left out at room temperature. After two hours, how many bacteria

Why do glass thermometers require special care when being handled? a. they can lose accuracy if held horizontally. b. they are relatively fragile and can become a physical contaminant if they break. c.

If a father is blood type A, and a mother is blood type B, what are all of the possible combinations that the offspring could be?

What does the acid test tell you about a mineral?

A population of Eastern Cottontail rabbits lives in a particular ecosystem. This population's major predator is the coyote and its major food source is vegetation.

1. Which number in a chemical formula tells you how many atoms of element you have? O A. Coefficient O B. Chemical symbol O c. Subscript O D. Capitals

Which statement best describes the cycling of carbon between the atmosphere and geosphere? A Precipitation and condensation increasing the groundwater supply B Glaciers melting due to an increase in global climate temperatures C Volcanic activity

What did George Buffon contribute to evolution

During this phase, chromosomes coil tightly, the nuclear membrane begins to breakdown, and the spindles begin to form. A. anaphase B. telophase C. prophase D. metaphase