Which domain(s) consist(s) of prokaryotic cells?

What is true about homologous structures?

a. they are always used for the same function b. they are formed from different developmental pathways c. the same genes direct their development d. they are only found within species not between species e. more than one of these is correct

Which scientist(s) discovered the basis for the basepair

rule, which states that the amounts of adenine and thymine match, as do the amounts of cytosine and guanine? a. Avery b. Griffith c. Chargaff d. Hershey and Chase e. Pauling

The gene that can detect the expression of another gene is called a/an ________

A) reporter gene B) transgene C) alternate gene D) inactivated gene E) functional gene

Sam was in a terrible head-on collision. When he recovered from all of the obvious, external injuries, the once affable and happy-go-lucky person had become surly and very unfriendly. Which part of his cerebrum was most likely damaged?

A) prefrontal cortex B) Broca's area C) thalamus D) postcentral gyrus