Which of the following is not part of genetic "linkage mapping"?
a. calculating recombination frequencies using a testcross
b. assuming that recombination frequency is proportional to the distance
between two linked genes
c. finding and studying alternative (e. g., mutant) phenotypes of a character
d. using information on dna sequences
e. studying characters two at a time

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?