_____ Is a Layer of Fat Cells That Insulates Most

question 21

Multiple Choice

_____ is a layer of fat cells that insulates most axons and speeds up the transmission of nerve impulses.

• A) A dendrite
• B) The myelin sheath
• C) The axon
• D) A nucleus

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Definitions:

Epigenetic Mark

Modifications in DNA and histone proteins that affect the expression of genes without altering their sequence.

Domestication

The process of converting wild plants and animals into forms that humans can care for and cultivate.

Epigenetic Molecules

Molecules that play a critical role in regulating the expression of genes without altering the DNA sequence.

Mother's Licking

In animal behavior, it refers to the grooming action performed by a mother towards her offspring, which is important for bonding and stimulation of the offspring's physical development.