A)Experiments by many different scientists contributed to our understanding of DNA as the sourceof heritable information. Griffith’s experiment found that substances from a healthy mouse could be transferred to a sick mouse and cause the cells to transform. For each of the following scientists, describe their classical experiment in detail and explain how it provided support for DNA (or RNA) as the primary genetic carrier. (25 points) Avery, McCarty, McLeod (5 points)
Hershey and Chase (5 points)
Erwin Chargaff (5 points)
Wilkins and Franklin (5 points)
Watson and Crick (5 points) 
b)The structure of DNA allows it to be easily copied so a complete genome can be passed tooffspring. (5 points)
Look at the segment of DNA shown. Draw the complementary strand. (2 points)

Explain how base pairing allows for heritable information to be passed to offspring. Include
information about complementary strands and DNA copies. (3 points)

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Communication and transportation have improved as a result of scientific advancements. select the best answer from the choices provided of mark this and return save and exit next