, harmful or helpful is considered to be the source for new alleles and a main contributor to the diversity of life.
A) Mitosis
B) Mutations
C) Transcription (which was already marked as an incorrect answer
D) Translation

The answer will be Mutations.

Explanation:

i hope this may help you!

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.