What do restriction enzymes do?
A. They cut strands of DNA at specific sites.
B. They separate DNA fragments so they can be seen
C. They make one DNA sample into many copies.
D. They illustrate which chromosomes are present.

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

In which terrestrial biome can you find trees that produce cones instead of flowers and needles instead of leaves? have trees that produce cones instead of flowers and needles instead of leaves. the latitudes in this biome have evenly distributed precipitation throughout the year. is it high or low

How is the carbon cycle related to global warming ?