The answer is skin.
There are four basic types of animal tissue - epithelium, connective, nervous, and muscle tissue. Epithelial cells form epithelium which covers surfaces of blood vessels and organs in the body. All glands are, as well, made of epithelial cells. Also, e<span>pithelial cells grow close together to form the body's skin. </span>
Answer:
Allele
Explanation:
An allele is a variant form of a gene
The allele that is not expressed or is hidden is the recessive allele.