Two characteristics used to define mammals include

a. mammary glands and scales.

b. mammary glands and hair or fur.

c. mammary glands and sweat glands.

d. sweat glands and a four-chamber heart.

What is the general term for bone projection?

Movement of a substance from an area of higher concentration to one where it is less concentrated in

Use what you learned about the characteristics of air to choose the correct answers from the drop-down menus. Density is the amount of mass in a certain___Air ___results from a column of air pushing on an area.

The major threat the GM foods pose to human health is:

While mRNA strands are being created, a sequence is sometimes miscopied. What is the worst that could happen to a cell should this take place?

What are restriction enzymes used for in nature?

Material with bits of rocks and once living parts of animals are

Think about a flower growing in your garden you notice that all of the leaves are falling off why is this a problem for the plant

How does polymerase chain reaction make DNA fingerprinting more reliable

A) What are the bases of mRNA coded for by this section of DNA before the mutation? Hint in RNA A pairs with U.