What feature of dna replication makes it semi-conservative?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion