The top layer of soil in the tundra that thaws in the summer is called the

As a small change in a person's dna can cause a genetic disorder

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen