How many sex chromosomes are there in a normal human karyotype?

A. 4

B. You only need one sex chromosome, and that determines if you are a male or female.

C. 2

I'm confused ...

Why do we see fireworks before we hear the explosions? A) The speed of sound is faster than the speed of light B) The speed of sound is the same as the speed of light C) The speed of light is faster than the speed of sound.

Which of the following is a structure that is found in the seeds of angiosperms and that often functions as a food storage organ? a) bryophyte B) taproot C) cotyledon D) xylem

Which of the following statements is true? The earth's asthenosphere is made of solid rock. The earth's inner mantle is made of solid rock. The earth's inner mantle and asthenosphere are made of solid rock.

What is the basic unit of structure and function of all living organisms? mitochondrion DNA nucleus cell

How does the earth system rely on on energy from the sun

In the large intestine material is stored how many hours prior to elimination?

It says which object has the most Kinect energy 1. A rock sitting on top of a cliff 2. A can of beans on a shelf 3. A truck moving at 10m/s 4. A poster stapled to a wall

Both GMOs and unmodified heirloom plants are commonly able to pass on genetic material through "Blank" gene transfer without human assistance.

Suppose you want to insert your pcr product into another organism's dna. which dna technique would you use?

What is a biome and what is the difference between a desert, forest, and grassland biome?