When it comes to hair texture, human hair can be very strait, very curly, or nearly anywhere in between (slightly wavy, very wavy etc.) Scientists have discovered several different gene pairs at several different chromosomal locations that influence hair texture in humans, therefore human hair texture can be described as a trait. In addition to the many gene pairs that can influence a person's hair texture, the environment can influence a person's hair texture as well. For example a person whose hair is slightly wavy on a dry day, might be more curly or frizzy hair on a humid day. Since hair texture is influenced by the environment as well as genes it is also considered a trait.

1: the largest region of the brain is the:

  cerebrum

2. the term "psychology" literally means:

the process or procedure of the science or study of the mind.

3. the area of the brain responsible for respiration, heart rate, and smooth muscle control of our blood vessels is t

medulla oblongata

4. the structure that conducts nerve impulses to and from the brain and serves as a reflex center for some sensory information without input from the brain is the:

spinal cord

5. the three-layered membrane that covers the brain and spinal cord and literally means membrane is called the:

meninges

6. the cord-like (string-like) structures that carry bio-electrical impulses from one part of the body to another are called

nerves

7. a group of nerve cell bodies that are found outside of the spinal cord and brain are referred to as:

ganglions or ganglia (pl.) “literal meaning knot”

8. the term that means spinal cord inflammation is:

myel/itis

the awnser is d i think

option number one would be youre best option