Which of the following causes genetic disorders and permanent changes in the DNA sequence? a. mitosis b. meiosis c. mutation d. none of these

Do vaccines work against viruses and bacteria?

If an atom had a nucleus of 1 ft in diameter, what would be the diameter of the atom in miles?

From earliest to most recent, what is the correct order in which organisms appear in the fossil record? a. dinosaurs, invertebrates, reptiles, mammals b. invertebrates, amphibians, dinosaurs, mammals c.

Why is paper chromatography useful

A wave that requires a medium such as air or water through which to travel is called a mechanical wave.

Which letter represents an organism that could only be a primary consumer?

Muscle cells in athletes often have more mitochondria than muscles cells in non athletes based on the observation it can be inferred that the muscle cell in athletes

1. What can all rocks be broken down into? 2 What kind of rock does magma cool and harden into another?

Why might it be beneficial for governments to restrict the types of plants and animals that individuals can keep as pets in a particular environment?

1. Which of the following gene is responsible for an amino acid synthesis in YAC vector? CEN URA3 ARS TRP1