Question

what was the purpose of darwins voyage around the world on the ship hms beagle?
to write his book \on the origin of species\
to discover genetics by crossbreeding pea plants
collected plant and animal specimens

Explanation:

Darwin's voyage on the HMS Beagle was a scientific expedition. During this journey, he collected a vast amount of plant and animal specimens. These specimens provided crucial evidence for his later work on evolution. The book "On the Origin of Species" was written after the voyage, using the data collected. Discovering genetics by crossbreeding pea plants was Mendel's work, not Darwin's.

Answer:

collected plant and animal specimens