The silurian period occurred                a.  during the hadean eon.      b.  before the neogene period.      c.  during the mesozoic era.      d.  after the permian era.

What happens during the experiment stage of the scientific method

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.

The part of the eye that closes and opens to let light in is .