Longitude? maybe,,Not sure
Answer: choice c
Explanation: choice a and choice c are very similar, but the phrasing of the words is different. Genes are made up of DNA.
Zero degrees latitude is the line designating the Equator and divides the Earth into two equal hemispheres (north and south).
Darwin's plans to find out about simulated choice by examining pigeons is that he needed to learn whether you can change the entire species taking after that particular pigeon into another type of pigeons. I hope the answer will help you.