A DNA segment removed from neurospora

(a pink mold) contained the base sequence

G-T-C-C-A-T-G-C-A. A similar segment of

DNA removed from neurospora that had been

exposed to radiation for several hours had the

base sequence G-T-C-C-A-T. This change in the

base sequence is an example of

(1) a deletion (3) a substitution

(2) an insertion (4) a replication

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

What does natural resource management aim at ?

Examine the air pressure map. which type of line is shown on the map?