Which statement is true of carriers? Select all that apply. A) They have one dominant allele.
B) They express the recessive trait.
C) They are heterozygous for a recessive disorder.
D) They can pass a gene for a recessive disorder.

Which individual below would be considered heterozygous? a.dd b.dd c.dd

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water

Identify the fungus type pictured below. the image shows a mushroom used often in cooking, will gills underneath its cap.