Stage 1 of delivery averages about 8 hours but may be longer for first-time mothers.
a. true
b. false

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

Which description provides the best objective summary of the article in the passage?

The pronunciation aid that determines the stress placed upon a syllable is the