Which one of the following discoveries involving dna happened first?
a. chargaff discovered that base pairing was consistent in samples of dna.
b. griffith learned that a chemical changed harmless cells into harmful cells.
c. avery discovered that dna was responsible for storing and passing information through generations.
d. hershey and chase used bacteriophages to confirm that dna was the genetic material in genes.

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

1) strawberry plants typically reproduce by making runners, which are miniature versions of themselves, that grow off of the roots and stems of the parent. this type of vegetative reproduction is known as a) pollination. b) fragmentation. c) binary fission. d) vegetative propogation.