Choose all the answers that apply. Organisms enter commensal relationships:

• for access to food
• to live off a host
• for protection
• for transportation
• to help other animals

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

What is a dendrite and what does it do?

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.