If two parents are homozygous for a genetically inherited recessive trait, what is the probability that they will have a child who does not have this trait in his or her phenotype?

In contrast to monkeys, which walk with flat hands/feet, gorillas are noted for this modified form of quadrupedalism.  Two words.

Humans migrated to the Americas by:

This tool industry is mainly associated with Homo habilis, does not have a biface and is typically considered more primitive.  One word.

This has been tested repeatedly and explains the how and why of natural phenomena.

Per your book, the ____________ hypothesis explains that bipedalism may have evolved as grasslands spread and as means to (possibly) see over tall grasses.   One word.

According to your textbook, there is evidence that Neanderthals cannibalized each other.

This is most accurately described as which type of cell?

This hominin is visibly more gracile (smoother/smaller features), has a rounded, smooth vault (no crests or ridges on the cranium), a cranial capacity of 450-550cc (centimeters cubed), and a fossil specimen that includes Taung Child?

This skull feature is found on gorillas, chimps and even in some robust species of hominins.  It helps to anchor temporalis/chewing muscles.  Careful with spelling – two words.