Mosses appear, die and decompose, this begins to form a layer of:

Succession
Primary Succession
Secondary Succession
Soil
Climax Community
Pioneer Species

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

What are the four stages of cell signaling?