Q: How many possible alleles do the majority of human genes have?


Read this paragraph and choose the correct option from the provided answers:

The majority of human genes have two or more possible alleles. Differences in alleles account for the considerable genetic variation among people. In fact, most human genetic variation is the result of differences in individual DNA bases within alleles.

 Choices:

- three or more

- two or less

- less than four

- two or more


A:
two or more