How are species diversity and genetic diversity different?

a. conservation biology is concerned with species diversity, but not with genetic diversity.
b. species diversity measures the number of individuals of a species, while genetic diversity measures the total variety of species.
c. species diversity is evaluated only in ecosystems, while genetic diversity is evaluated in the entire biosphere.
d. species diversity measures the number of species in the biosphere, while genetic diversity measures the variety of genes in the biosphere, including genetic variation within species.

The correct answer is D. Species diversity measures the number of species in the biosphere, while genetic diversity measures the variety of genes in the biosphere, including genetic variation within species.

Explanation:

In biology, diversity refers to the existence of multiple species, ecosystems, traits, etc. Additionally, diversity can be classified into species diversity that refers to the number of species that exists in a specific ecosystem, biosphere, zone or even all the planet or as genetic diversity that refers to the variation in genes, this includes both the variety of genes in an ecosystem or zone but also this variation in a specific species or population that is closely connected to evolution. According to this, the option that describes the difference between species and genetic diversity is D.