Which of the following describes an organism that has two different alleles for a trait

The venom of the Eastern diamondback rattler and the Indian cobra contains phospholipase A2, which catalyzes the hydrolysis of fatty acids at the C-2 position of glycerophospholipids.

How many chambers does the heart contain?

Meselson and Stahl determined that DNA replication in E coli is semiconservative. What additive did they initially supply to the medium in order to distinguish "new" from "old" DNA?

What are the jobs or the nasal cavity? Select all that apply?

An object's speed in a particular direction is called its.

Before a volcanic eruption, seismic activity seems to:

What is the significance of meiosis with respect to sexual reproduction?

How did Darwin's understanding of heritability weaken his arguments?

Which statement best describes the overall change that occurs as a result of mitosis?

When people plant vegetation they what? erosion